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Thread: Is a 1% sample rate in population 25 million suffcient.

  1. #1
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    Is a 1% sample rate in population 25 million suffcient.

    I have been told by the Office for National Statistics that they calculate the median national wage in the UK using a sample rate of 1%.

    Can this truly give an accurate reflection of what the media will, rightly or wrongly, call the average UK wage ?

    Thanks for reading.
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    Re: Is a 1% sample rate in population 25 million suffcient.

    This was quite intriguing so I read up on it. You cannot say how accurate they are without knowing the standard deviation of the wage. Take a look at http://library.lincoln.ac.nz/Global/...ample-size.pdf under the heading "Estimation and Sample Size Determination for Finite Populations" if you want to know how to calculate how accurate a sample of 1% is.
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    Re: Is a 1% sample rate in population 25 million suffcient.

    I did a bit more research, this article on page 380 suggests that the standard deviation of hourly wage is £2.69 http://www.ucl.ac.uk/~uctpb21/doc/6%20DustPer.pdf

    For most applications people take a 95% confidence interval so I'll take the z-score to be 1.96

    From the method in my earlier most the required sample size n is n= \frac{z^2\sigma^2}{z^2\sigma^2+e^2(N-1)}
    To simplify things a bit, since N is several million I will take N-1 to be N
    n= \frac{z^2\sigma^2}{z^2\sigma^2+e^2(N)}

    Since they are taking 1% of the population n= 0.01N

    0.01N= \frac{z^2\sigma^2}{z^2\sigma^2+e^2N}

    Rearranging

    e^2= z^2\sigma^2(\frac{1}{0.01N}-\frac{1}{N})

    e^2= z^2\sigma^2\frac{99}{N}

    Now for hourly wage \sigma^2=2.69^2= 7.24
    And the size of the labour force N is approximately 32 million
    And z^2=1.96^2= 3.8416

    Putting those into the equation you get

    e^2= \frac{1835}{32000000}
    e= 0.0076

    This shows that they are 95% sure their estimate for average hourly wage will be less than 0.76p (under 1p) different to the true average . Seems very low to me, the error for monthly salary would of course be higher than the hourly salary, then again, 300000 is quite a big sample size
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    Re: Is a 1% sample rate in population 25 million suffcient.

    Thanks for the effort Shakarri, I do appreciate it, but unfortunately I am none the wiser.

    I will rephrase my questions:

    is a 1% sample rate large enough to make an accurate median figure?

    does it depend on sample size?

    We will never be able to get the actual data that the ONS use ( paranoid anal red-tape obfuscational bureaucacy ) so will never be able to assess the s.d. of the wages that they apply, so........

    would you risk your life on the accuracy of their 'median UK wage' ?
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    Re: Is a 1% sample rate in population 25 million suffcient.

    The bottom line is: This shows that they are 95% sure their estimate for average hourly wage will be less than 0.76p (under 1p) different to the true average.
    Under 1p is tiny compared to an hourly wage. Lets say we under-estimated the standard deviation of the hourly wage a lot and the standard deviation is actually double what we though. The amount they are off the mean by is double 0.76p, they would be off the mean by 1.52p.
    Lets say that these calculations for the mean are not so good at predicting for the median's accuracy and their estimate for the median is worse than we expect, we'll take it as being half as accurate so that they have the median accurate to within 3.04p.
    I guess you are interested in a weekly salary, so taking a 40 hour week as being the norm, the inaccuracy of the estimate for median weekly salary would be 40 times 3.04p= £1.22.

    So taking the worst case scenario where the assumptions I made in the calculation were under-estimating the error, the government should have a median weekly salary figure that is exact to within £1.22 of the true median. That seems accurate enough to me.

    How much does it depend on sample size?
    Doubling the sample size will approximately halve the error, tripling the sample size will approximately third the error.
    Last edited by Shakarri; March 18th 2013 at 03:49 AM.
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    Re: Is a 1% sample rate in population 25 million suffcient.

    Thanks for your continuing effort and explanation Shakarri.

    I am going to further push your patience - I totally accept what you say about doubling the standard deviation having so small difference to an hourly never mind a weekly or monthly wage - but would you agree that with such a small sample size, the sample spread would be critical? i.e. a few millionaires making in excess of £480 an hour in relation to those on the 'minimum' wage of around £6 an hour would be highly significant and would you take an actual proportion of those on such a high wage in actual terms to the number not on such a high earnings and incorporate that into the calculation, be it median or 'average' wage ?

    -and do you think the ONS ( or any data processor ) would do this?
    -and is it an easy statistical method to apply?
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    Re: Is a 1% sample rate in population 25 million suffcient.

    Remember that the sample standard deviation is independent of population size. If you surveyed 10 people in London out of the 5 million workers and found the standard deviation and then surveyed 10 people in the UK out of the 25 million workers and found the standard deviation they would be equally accurate; just because you surveyed a smaller proportion of the UK than of London does not mean that the estimate you got for the UK is less accurate- the important thing is that you sampled 10 people.
    In your example the important thing is you sampled 250000 people. You can look at confidence intervals for the standard deviation to see how close your sample standard deviation is to the true standard deviation. I checked how accurate the standard deviation should be for a sample size of 250000 and it is very nearly exact, because the sample standard deviation is nearly the same as the the true standard deviation the millionaires earning £480 and hour are not distorting the survey.
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    Re: Is a 1% sample rate in population 25 million suffcient.

    I thank you yet again for trying to enlighten me Shakarri.

    I have been pondering your last answer for some time and accept your "Remember that the sample standard deviation is independent of population size. If you surveyed 10 people in London out of the 5 million workers and found the standard deviation and then surveyed 10 people in the UK out of the 25 million workers and found the standard deviation they would be equally accurate; just because you surveyed a smaller proportion of the UK than of London does not mean that the estimate you got for the UK is less accurate- the important thing is that you sampled 10 people. " due to my lack of getting my head around s.d. but accept that they may be both as accurate but not equal.

    I still fail to understand in the median wage example how the actual samples used would not be crucial to the outcome median........... but with regard to your "You can look at confidence intervals for the standard deviation to see how close your sample standard deviation is to the true standard deviation." here is an exact copy of the ONS responses I got and does this change your view on the accuracy of the ONS median Scottish wage which was my original enquiry with them referring to this Scottish Government webpage:
    Earnings

    Dear worthatry

    The Annual Survey of Hours and Earnings (ASHE) is based on a 1 per cent sample of employee jobs taken from HM Revenue & Customs (HMRC) PAYE records. Information on earnings and hours is obtained from employers and treated confidentially. ASHE does not cover the self-employed
    nor does it cover employees not paid during the reference period. In 2011 information related to the pay period which included 13 April.

    Response rate for the 2011 ASHE is based on approximately 190,000 returns. The ASHE samples from the PAYE system, but weights responses to the number of jobs from the Labour Force Survey.

    The headline statistics for ASHE are based on the median rather than the mean. The median is the value below which 50 per cent of employees fall. It is ONS's preferred measure of average earnings as it is less affected by a relatively small number of very high earners and the skewed distribution of earnings. It therefore gives a better indication of typical pay than the mean.

    Figures for Number of Jobs are for indicative purposes only and should not be considered an accurate estimate of employee job counts. Below is a snapshot from ASHE Table 5 which indicates 1,379,000 paid jobs in Scotland for employees on adult rates who have been in the same job for more than a year earning a median gross average of £25,490.

    The attachment should be here

    I hope this answers your questions but you will find further information from the Annual Survey of Hours and Earnings Guidance and Methodology section.

    Regards

    Sarah


    __________________________________________________ __________________________________________________ ___________________________________
    Annual Survey of Hours and Earnings Helpdesk | Labour Market Division | Office for National Statistics | Room 1.264 | Cardiff Road | Newport | Wales | NP10 8XG
    Phone: 01633 45 6120 | Email: mailto:earnings@ons.gsi.gov.uk



    [email] mine
    26/02/2013 01:07

    To: Earnings@ONS
    cc:
    Subject: Re: Breakdown of Scottish median wage 2010 - 2011 - Ref: CCC3741 - Ref: CCC3869 FAO - ALYSON WILLIAMS



    Dear Sarah

    I do not understand how the source you cite can
    be the source of www.scotland.gov.uk/Resource/Img/933/0108067.gif
    as I can find no reference to rates of pay.

    I will
    clarify my enquiry:
    the web page above states "In 2011 the
    median gross annual full time earnings in Scotland was £25,490, ",
    I
    am trying to find out the justification for this claim i.e.
    number of people earning x amounts of pay that are used in
    calculating the claimed £25,490.

    Yours increasingly intrigued


    worthatry


    ************************************************** ************************************************** *********


    ----Original Message----
    >From: Earnings@ons.gsi.gov.uk
    >Date:
    22/02/2013 12:20
    >To: my e-mail..
    >Subj: Re:
    Breakdown of Scottish median wage 2010 - 2011 - Ref: CCC3741 - Ref:
    CCC3869 FAO - ALYSON WILLIAMS
    >
    >Dear Customer,
    >
    >I have spoken to the
    Scottish Government and the source of this data is
    >from the Annual
    Survey of Hours and Earnings (ASHE).
    >
    >Earnings

    >
    >
    >ASHE data for all the years can be found HERE by clicking onto
    the year
    >then onto 'reference tables' then scrolling down to Table 3.1
    a you will
    >locate Region by occupation data which includes the
    Scottish figures that
    >fed in to the Scottish Governments spreadsheet.
    The spreadsheets are
    >broken down by All Workers/All Males/All
    Females/Full Time and Part Time
    >by gender. The median is considered
    the statistical average for ASHE
    >tables, although mean averages are
    given.
    >
    >Also within each table we show in column B, number of jobs
    (thousand).
    >Figures for number of jobs are for indicative purposes
    only and should not
    >be considered an accurate estimate of employee
    job counts.
    >
    >Regards
    >
    >Sarah
    >
    >

    >_________________________________________________ __________________________________________________ ____________________________________

    >Annual Survey of Hours and Earnings Helpdesk | Labour Market Division
    |
    >Office for National Statistics | Room 1.264 | Cardiff Road |
    Newport |
    >Wales | NP10 8XG
    >Phone: 01633 45 6120 | Email: mailto:
    mearnings@ons.gsi.gov.uk
    >
    >
    >
    >
    >
    >info
    >Sent by: Karina Main

    >22/02/2013 10:14
    >Please respond to info
    >
    > To:
    Earnings@ONS
    > cc:
    > Subject: Breakdown of
    Scottish median wage 2010 - 2011 -
    >Ref: CCC3741 - Ref: CCC3869 FAO -
    ALYSON WILLIAMS
    >
    >
    >Dear colleague
    >
    >Please see the email below,
    received by the Customer Contact Centre.
    >
    >Could you please respond
    directly to the customer?
    >
    >The customer email address is
    chronosynclastic@tiscali.co.uk
    >
    >If I have forwarded this enquiry to
    you/your team in error, can you please
    >let me know who the correct
    recipient should be? This will help improve
    >our service to customers.

    >
    >Thank you,
    >
    >Karina Main
    >Customer Advisor| Cynghorydd Cwsmeriaid

    >Customer Support and Digital Development | Cefnogi Cwsmeriaid a

    >Datblygiadau Digidol
    >Room 1.101 | Ystafell 1.101
    >Office for
    National Statistics | Swyddfa Ystadegau Gwladol
    >Government Buildings |
    Adeiladau'r Llywodraeth
    >Cardiff Road | Heol Caerdydd
    >NP10 8XG

    >Telephone 0845 6013034 | Ffôn: 0845 6013034
    >
    >Dear Karina.
    >Thank
    you for dealing with my request.
    >
    >I was rather alarmed by
    the reply from whom you forwarded it to,
    >viz
    >"Unfortunately
    there is no source to the data so I am unable to confirm
    >where
    >that
    information has come from. "
    >( Alyson Williams ) see attachment
    >

    >Can you elaborate or give mitigating reasons on this state
    of
    >affairs
    >as to why this bar chart which is produced on
    a Scottish
    >Parliament
    >website appears to be produced from
    thin air?
    >If not, could you bring this matter to ther attention
    of your Line
    >
    >Manager.
    >
    >Yours Sincerely
    >
    >worthatry
    >

    >************************************************* *******************************

    >*********
    >>----Original Message----
    >>From: karina.main@ons.gsi.gov.
    uk
    >>Date: 21/02/2013 14:18
    >>To: my e-mail

    >>Subj: Breakdown of Scottish median wage 2010 - 2011 - Ref: CCC3741
    >>

    >>
    >>
    >>Dear worthatry,
    >>
    >>Thank you for your email.
    >>
    >>I have forwarded
    your request to the Earnings Team. The team will send a
    >>response
    directly to you. Their contact details are:
    >>
    >>Phone: 01633 456120

    >>Email : earnings@ons.gsi.gov.uk
    >>
    >>Kind regards
    >>
    >>Karina Main

    >>Customer Advisor| Cynghorydd Cwsmeriaid
    >>Customer Support and
    Digital Development | Cefnogi Cwsmeriaid a
    >>Datblygiadau Digidol

    >>Room 1.101 | Ystafell 1.101
    >>Office for National Statistics |
    Swyddfa Ystadegau Gwladol
    >>Government Buildings | Adeiladau'r
    Llywodraeth
    >>Cardiff Road | Heol Caerdydd
    >>NP10 8XG
    >>Telephone 0845
    6013034 | Ffôn: 0845 6013034
    >>
    >>
    >>Dear ONS
    >>
    >>could you
    furnish me with more details on this bar chart :
    >>http://www.scotland.gov.uk/Resource/Img/933/0108067.gif>>http://www.scotland.gov.uk/Resource/Img/933/0108067.gif
    >>
    >>I wish to know how many were in the nine individual
    groups ie
    >>numbers in each group and if possible breakdown
    of this into
    >>male /
    >>female.
    >>
    >>Thank you for your
    assistance.
    >>
    >>worthatry
    >>
    >>This email was received from the
    INTERNET and scanned by the Government
    >>Secure
    >>Intranet anti-virus
    service supplied by Cable&Wireless Worldwide in
    >>partnership
    >>with
    MessageLabs. (CCTM Certificate Number 2009/09/0052.) In case of

    >>problems,
    >>please call your organisation’s IT Helpdesk.
    Communications via the GSi
    >may
    >>be
    >>automatically logged, monitored
    and/or recorded for legal purposes.
    >>
    >>
    >>For the latest data on the
    economy and society consult National
    >Statistics at
    >http://www.ons.gov.uk>
    >>************************************************ *******************************

    >**
    >>
    >>
    >>Please Note: Incoming and outgoing email messages are
    routinely
    >monitored for
    >compliance with our policy on the use of
    electronic communications

    >>************************************************ *******************************

    >**
    >>
    >>
    >>Legal Disclaimer : Any views expressed by the sender of
    this message
    >are not
    >necessarily those of the Office for National
    Statistics

    >>************************************************ *******************************

    >**
    >>
    >>
    >>The original of this email was scanned for viruses by the
    Government
    >Secure
    >Intranet virus scanning service supplied by
    Cable&Wireless Worldwide in
    >partnership with MessageLabs. (CCTM
    Certificate Number 2009/09/0052.) On
    >leaving the GSi this email was
    certified virus free.
    >>Communications via the GSi may be automatically
    logged, monitored and/or
    >recorded for legal purposes.
    >>
    >
    >
    >This
    email was received from the INTERNET and scanned by the Government

    >Secure
    >Intranet anti-virus service supplied by Cable&Wireless
    Worldwide in
    >partnership
    >with MessageLabs. (CCTM Certificate Number
    2009/09/0052.) In case of
    >problems,
    >please call your organisation’s
    IT Helpdesk. Communications via the GSi
    >may be
    >automatically
    logged, monitored and/or recorded for legal purposes.
    >----- Message
    from Earnings <earnings@ons.gov.uk> on Thu, 21 Feb 2013
    >14:38:44

    >+0000 -----
    >To: mine
    >Subject:
    Re: Breakdown of Scottish median wage 2010 - 2011 - Ref:
    >CCC3741
    >

    >Dear Customer,
    >
    >Many thanks for recent inquiry and links to charts
    on the Scottish
    >government
    >website. Unfortunately there is no
    source to the data so I am unable to
    >confirm where that information
    has come from. However, I work on the
    >Annual
    >Survey of Hours and
    Earnings, which sample approximately 1% of those in
    >the Pay
    >As You
    Earn Tax Scheme in the UK, the main focus would be average
    >earnings.

    >All the years worth of data can be found HERE by clicking onto the
    year
    >then
    >onto 'reference tables' then scrolling down to Table 3.1a
    - note there are
    >
    >provisional years as well as revised years data
    for some years, there are
    >also
    >double years on 2004, 2006 and 2011,
    this is where we have changed the
    >methodology or changed
    classification (as in the case of 2011)
    >The spreadsheets are broken
    down by All Workers/All Males/All Females/Full
    >Time
    >and Part Time
    by gender. The median is considered the statistical average
    >for

    >ASHE tables, although mean averages are given. CV files are shown
    these
    >are
    >the quality checks carried out on the data and are
    supplied for reference
    >only.
    >
    >I hope that this information is
    useful to you.
    >
    >Regards
    >Alyson Williams

    >_________________________________________________ _______________________________

    >_________________________________________________ ______ Annual Survey
    of
    >Hours
    >and Earnings Helpdesk | Labour Market Division | Office
    for National
    >Statistics
    >| Room 1.264 | Cardiff Road | Newport |
    Wales | NP10 8XG Phone: 01633 45
    >6120 |
    >Email: mailto:mearnings@ons.
    gsi.gov.uk
    >
    >
    >
    > info
    >Sent by: Karina Main
    >
    21/02/2013 14:19
    >Please respond to info
    > To:
    Earnings@ONS
    > cc:
    > Subject: Breakdown of
    Scottish median wage 2010 - 2011 -
    >Ref:
    >CCC3741
    >
    >
    >
    >
    >Dear
    colleague
    >
    >Please see the email below, received by the Customer
    Contact Centre.
    >
    >Could you please respond directly to the customer?

    >
    >The customer email address is mine
    >
    >If
    I have forwarded this enquiry to you/your team in error, can you
    please
    >let
    >me know who the correct recipient should be? This will
    help improve our
    >service
    >to customers.
    >
    >Thank you,
    >
    >Karina
    Main
    >Customer Advisor| Cynghorydd Cwsmeriaid
    >Customer Support and
    Digital Development | Cefnogi Cwsmeriaid a
    >Datblygiadau
    >Digidol

    >Room 1.101 | Ystafell 1.101
    >Office for National Statistics | Swyddfa
    Ystadegau Gwladol
    >Government Buildings | Adeiladau'r Llywodraeth

    >Cardiff Road | Heol Caerdydd
    >NP10 8XG
    >Telephone 0845 6013034 | Ffôn:
    0845 6013034
    >
    >Dear ONS
    >
    >could you furnish me with more
    details on this bar chart :
    >http://www.scotland.gov.uk/Resource/Img/933/0108067.gif>http://www.scotland.gov.uk/Resource/Img/933/0108067.gif
    >
    >I wish to know how many were in the nine individual
    groups ie
    >numbers in each group and if possible breakdown
    of this into
    >male /
    >female.
    >
    >Thank you for your assistance.

    >
    >worthatry
    >
    >This email was received from the INTERNET and scanned
    by the Government
    >Secure
    >Intranet anti-virus service supplied by
    Cable&Wireless Worldwide in
    >partnership
    >with MessageLabs. (CCTM
    Certificate Number 2009/09/0052.) In case of
    >problems,
    >please call
    your organisation’s IT Helpdesk. Communications via the GSi
    >may be

    >automatically logged, monitored and/or recorded for legal purposes.
    >

    >
    >
    >For the latest data on the economy and society consult National
    Statistics
    >at
    >http://www.ons.gov.uk>

    >************************************************* *******************************

    >*
    >
    >
    >Please Note: Incoming and outgoing email messages are
    routinely monitored
    >for
    >compliance with our policy on the use of
    electronic communications

    >************************************************* *******************************

    >*
    >
    >
    >Legal Disclaimer : Any views expressed by the sender of this
    message are
    >not
    >necessarily those of the Office for National
    Statistics

    >************************************************* *******************************

    >*
    >
    >
    >The original of this email was scanned for viruses by the
    Government
    >Secure
    >Intranet virus scanning service supplied by
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    >Communications via the GSi may be automatically
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    >This email
    was received from the INTERNET and scanned by the Government
    >Secure

    >Intranet anti-virus service supplied by Cable&Wireless Worldwide in

    >partnership
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    This email was received from the INTERNET and scanned by the Government Secure Intranet anti-virus service supplied by Cable&Wireless Worldwide in partnership with MessageLabs. (CCTM Certificate Number 2009/09/0052.) In case of problems, please call your organisation’s IT Helpdesk.
    Communications via the GSi may be automatically logged, monitored and/or recorded for legal purposes.


    The original of this email was scanned for viruses by the Government Secure Intranet virus scanning service supplied by Cable&Wireless Worldwide in partnership with MessageLabs. (CCTM Certificate Number 2009/09/0052.) On leaving the GSi this email was certified virus free.
    Communications via the GSi may be automatically logged, monitored and/or recorded for legal purposes.


    I hope this answers your questions but you will find further information from the Annual Survey of Hours and Earnings Guidance and Methodology section.

    Regards

    Sarah


    __________________________________________________ __________________________________________________ ___________________________________
    Annual Survey of Hours and Earnings Helpdesk | Labour Market Division | Office for National Statistics | Room 1.264 | Cardiff Road | Newport | Wales | NP10 8XG
    Phone: 01633 45 6120 | Email: mailto:earnings@ons.gsi.gov.uk



    mine
    26/02/2013 01:07

    To: Earnings@ONS
    cc:
    Subject: Re: Breakdown of Scottish median wage 2010 - 2011 - Ref: CCC3741 - Ref: CCC3869 FAO - ALYSON WILLIAMS



    Dear Sarah

    I do not understand how the source you cite can
    be the source of www.scotland.gov.uk/Resource/Img/933/0108067.gif
    as I can find no reference to rates of pay.

    I will
    clarify my enquiry:
    the web page above states "In 2011 the
    median gross annual full time earnings in Scotland was £25,490, ",
    I
    am trying to find out the justification for this claim i.e.
    number of people earning x amounts of pay that are used in
    calculating the claimed £25,490.

    Yours increasingly intrigued


    worthatry


    ************************************************** ************************************************** *********


    ----Original Message----
    >From: Earnings@ons.gsi.gov.uk
    >Date:
    22/02/2013 12:20
    >To: <my e-mail>..
    >Subj: Re:
    Breakdown of Scottish median wage 2010 - 2011 - Ref: CCC3741 - Ref:
    CCC3869 FAO - ALYSON WILLIAMS
    >
    >Dear Customer,
    >
    >I have spoken to the
    Scottish Government and the source of this data is
    >from the Annual
    Survey of Hours and Earnings (ASHE).
    >
    >Earnings

    >
    >
    >ASHE data for all the years can be found HERE by clicking onto
    the year
    >then onto 'reference tables' then scrolling down to Table 3.1
    a you will
    >locate Region by occupation data which includes the
    Scottish figures that
    >fed in to the Scottish Governments spreadsheet.
    The spreadsheets are
    >broken down by All Workers/All Males/All
    Females/Full Time and Part Time
    >by gender. The median is considered
    the statistical average for ASHE
    >tables, although mean averages are
    given.
    >
    >Also within each table we show in column B, number of jobs
    (thousand).
    >Figures for number of jobs are for indicative purposes
    only and should not
    >be considered an accurate estimate of employee
    job counts.
    >
    >Regards
    >
    >Sarah
    >
    >

    >_________________________________________________ __________________________________________________ ____________________________________

    >Annual Survey of Hours and Earnings Helpdesk | Labour Market Division
    |
    >Office for National Statistics | Room 1.264 | Cardiff Road |
    Newport |
    >Wales | NP10 8XG
    >Phone: 01633 45 6120 | Email: mailto:
    mearnings@ons.gsi.gov.uk
    >
    >
    >
    >
    >
    >info
    >Sent by: Karina Main

    >22/02/2013 10:14
    >Please respond to info
    >
    > To:
    Earnings@ONS
    > cc:
    > Subject: Breakdown of
    Scottish median wage 2010 - 2011 -
    >Ref: CCC3741 - Ref: CCC3869 FAO -
    ALYSON WILLIAMS
    >
    >
    >Dear colleague
    >
    >Please see the email below,
    received by the Customer Contact Centre.
    >
    >Could you please respond
    directly to the customer?
    >
    >The customer email address is
    mine
    >
    >If I have forwarded this enquiry to
    you/your team in error, can you please
    >let me know who the correct
    recipient should be? This will help improve
    >our service to customers.

    >
    >Thank you,
    >
    >Karina Main
    >Customer Advisor| Cynghorydd Cwsmeriaid

    >Customer Support and Digital Development | Cefnogi Cwsmeriaid a

    >Datblygiadau Digidol
    >Room 1.101 | Ystafell 1.101
    >Office for
    National Statistics | Swyddfa Ystadegau Gwladol
    >Government Buildings |
    Adeiladau'r Llywodraeth
    >Cardiff Road | Heol Caerdydd
    >NP10 8XG

    >Telephone 0845 6013034 | Ffôn: 0845 6013034
    >
    >Dear Karina.
    >Thank
    you for dealing with my request.
    >
    >I was rather alarmed by
    the reply from whom you forwarded it to,
    >viz
    >"Unfortunately
    there is no source to the data so I am unable to confirm
    >where
    >that
    information has come from. "
    >( Alyson Williams ) see attachment
    >

    >Can you elaborate or give mitigating reasons on this state
    of
    >affairs
    >as to why this bar chart which is produced on
    a Scottish
    >Parliament
    >website appears to be produced from
    thin air?
    >If not, could you bring this matter to ther attention
    of your Line
    >
    >Manager.
    >
    >Yours Sincerely
    >
    >worthatry
    >

    >************************************************* *******************************

    >*********
    >>----Original Message----
    >>From: karina.main@ons.gsi.gov.
    uk
    >>Date: 21/02/2013 14:18
    >>To: <my e-mail>

    >>Subj: Breakdown of Scottish median wage 2010 - 2011 - Ref: CCC3741
    >>

    >>
    >>
    >>Dear worthatry,
    >>
    >>Thank you for your email.
    >>
    >>I have forwarded
    your request to the Earnings Team. The team will send a
    >>response
    directly to you. Their contact details are:
    >>
    >>Phone: 01633 456120

    >>Email : earnings@ons.gsi.gov.uk
    >>
    >>Kind regards
    >>
    >>Karina Main

    >>Customer Advisor| Cynghorydd Cwsmeriaid
    >>Customer Support and
    Digital Development | Cefnogi Cwsmeriaid a
    >>Datblygiadau Digidol

    >>Room 1.101 | Ystafell 1.101
    >>Office for National Statistics |
    Swyddfa Ystadegau Gwladol
    >>Government Buildings | Adeiladau'r
    Llywodraeth
    >>Cardiff Road | Heol Caerdydd
    >>NP10 8XG
    >>Telephone 0845
    6013034 | Ffôn: 0845 6013034
    >>
    >>
    >>Dear ONS
    >>
    >>could you
    furnish me with more details on this bar chart :
    >>http://www.scotland.gov.uk/Resource/Img/933/0108067.gif>>http://www.scotland.gov.uk/Resource/Img/933/0108067.gif
    >>
    >>I wish to know how many were in the nine individual
    groups ie
    >>numbers in each group and if possible breakdown
    of this into
    >>male /
    >>female.
    >>
    >>Thank you for your
    assistance.
    >>
    >>worthatry
    >>
    >>This email was received from the
    INTERNET and scanned by the Government
    >>Secure
    >>Intranet anti-virus
    service supplied by Cable&Wireless Worldwide in
    >>partnership
    >>with
    MessageLabs. (CCTM Certificate Number 2009/09/0052.) In case of

    >>problems,
    >>please call your organisation’s IT Helpdesk.
    Communications via the GSi
    >may
    >>be
    >>automatically logged, monitored
    and/or recorded for legal purposes.
    >>
    >>
    >>For the latest data on the
    economy and society consult National
    >Statistics at
    >http://www.ons.gov.uk>
    >>************************************************ *******************************

    >**
    >>
    >>
    >>Please Note: Incoming and outgoing email messages are
    routinely
    >monitored for
    >compliance with our policy on the use of
    electronic communications

    >>************************************************ *******************************

    >**
    >>
    >>
    >>Legal Disclaimer : Any views expressed by the sender of
    this message
    >are not
    >necessarily those of the Office for National
    Statistics

    >>************************************************ *******************************

    >**
    >>
    >>
    >>The original of this email was scanned for viruses by the
    Government
    >Secure
    >Intranet virus scanning service supplied by
    Cable&Wireless Worldwide in
    >partnership with MessageLabs. (CCTM
    Certificate Number 2009/09/0052.) On
    >leaving the GSi this email was
    certified virus free.
    >>Communications via the GSi may be automatically
    logged, monitored and/or
    >recorded for legal purposes.
    >>
    >
    >
    >This
    email was received from the INTERNET and scanned by the Government

    >Secure
    >Intranet anti-virus service supplied by Cable&Wireless
    Worldwide in
    >partnership
    >with MessageLabs. (CCTM Certificate Number
    2009/09/0052.) In case of
    >problems,
    >please call your organisation’s
    IT Helpdesk. Communications via the GSi
    >may be
    >automatically
    logged, monitored and/or recorded for legal purposes.
    >----- Message
    from Earnings <earnings@ons.gov.uk> on Thu, 21 Feb 2013
    >14:38:44

    >+0000 -----
    >To: my e-mail
    >Subject:
    Re: Breakdown of Scottish median wage 2010 - 2011 - Ref:
    >CCC3741
    >

    >Dear Customer,
    >
    >Many thanks for recent inquiry and links to charts
    on the Scottish
    >government
    >website. Unfortunately there is no
    source to the data so I am unable to
    >confirm where that information
    has come from. However, I work on the
    >Annual
    >Survey of Hours and
    Earnings, which sample approximately 1% of those in
    >the Pay
    >As You
    Earn Tax Scheme in the UK, the main focus would be average
    >earnings.

    >All the years worth of data can be found HERE by clicking onto the
    year
    >then
    >onto 'reference tables' then scrolling down to Table 3.1a
    - note there are
    >
    >provisional years as well as revised years data
    for some years, there are
    >also
    >double years on 2004, 2006 and 2011,
    this is where we have changed the
    >methodology or changed
    classification (as in the case of 2011)
    >The spreadsheets are broken
    down by All Workers/All Males/All Females/Full
    >Time
    >and Part Time
    by gender. The median is considered the statistical average
    >for

    >ASHE tables, although mean averages are given. CV files are shown
    these
    >are
    >the quality checks carried out on the data and are
    supplied for reference
    >only.
    >
    >I hope that this information is
    useful to you.
    >
    >Regards
    >Alyson Williams

    >_________________________________________________ _______________________________

    >_________________________________________________ ______ Annual Survey
    of
    >Hours
    >and Earnings Helpdesk | Labour Market Division | Office
    for National
    >Statistics
    >| Room 1.264 | Cardiff Road | Newport |
    Wales | NP10 8XG Phone: 01633 45
    >6120 |
    >Email: mailto:mearnings@ons.
    gsi.gov.uk
    >
    >
    >
    > info
    >Sent by: Karina Main
    >
    21/02/2013 14:19
    >Please respond to info
    > To:
    Earnings@ONS
    > cc:
    > Subject: Breakdown of
    Scottish median wage 2010 - 2011 -
    >Ref:
    >CCC3741
    >
    >
    >
    >
    >Dear
    colleague
    >
    >Please see the email below, received by the Customer
    Contact Centre.
    >
    >Could you please respond directly to the customer?

    >
    >The customer email address is my e-mail
    >
    >If
    I have forwarded this enquiry to you/your team in error, can you
    please
    >let
    >me know who the correct recipient should be? This will
    help improve our
    >service
    >to customers.
    >
    >Thank you,
    >
    >Karina
    Main
    >Customer Advisor| Cynghorydd Cwsmeriaid
    >Customer Support and
    Digital Development | Cefnogi Cwsmeriaid a
    >Datblygiadau
    >Digidol

    >Room 1.101 | Ystafell 1.101
    >Office for National Statistics | Swyddfa
    Ystadegau Gwladol
    >Government Buildings | Adeiladau'r Llywodraeth

    >Cardiff Road | Heol Caerdydd
    >NP10 8XG
    >Telephone 0845 6013034 | Ffôn:
    0845 6013034
    >
    >Dear ONS
    >
    >could you furnish me with more
    details on this bar chart :
    >http://www.scotland.gov.uk/Resource/Img/933/0108067.gif>http://www.scotland.gov.uk/Resource/Img/933/0108067.gif
    >
    >I wish to know how many were in the nine individual
    groups ie
    >numbers in each group and if possible breakdown
    of this into
    >male /
    >female.
    >
    >Thank you for your assistance.

    >
    >worthatry
    >
    >This email was received from the INTERNET and scanned
    by the Government
    >Secure
    >Intranet anti-virus service supplied by
    Cable&Wireless Worldwide in
    >partnership
    >with MessageLabs. (CCTM
    Certificate Number 2009/09/0052.) In case of
    >problems,
    >please call
    your organisation’s IT Helpdesk. Communications via the GSi
    >may be

    >automatically logged, monitored and/or recorded for legal purposes.
    >

    >
    >
    >For the latest data on the economy and society consult National
    Statistics
    >at
    >http://www.ons.gov.uk>

    >************************************************* *******************************

    >*
    >
    >
    >Please Note: Incoming and outgoing email messages are
    routinely monitored
    >for
    >compliance with our policy on the use of
    electronic communications

    >************************************************* *******************************

    >*
    >
    >
    >Legal Disclaimer : Any views expressed by the sender of this
    message are
    >not
    >necessarily those of the Office for National
    Statistics

    >************************************************* *******************************

    >*
    >
    >
    >The original of this email was scanned for viruses by the
    Government
    >Secure
    >Intranet virus scanning service supplied by
    Cable&Wireless Worldwide in
    >partnership with MessageLabs. (CCTM
    Certificate Number 2009/09/0052.) On
    >leaving the GSi this email was
    certified virus free.
    >Communications via the GSi may be automatically
    logged, monitored and/or
    >recorded for legal purposes.
    >
    >This email
    was received from the INTERNET and scanned by the Government
    >Secure

    >Intranet anti-virus service supplied by Cable&Wireless Worldwide in

    >partnership
    >with MessageLabs. (CCTM Certificate Number
    2009/09/0052.) In case of
    >problems,
    >please call your organisation’s
    IT Helpdesk. Communications via the GSi
    >may be
    >automatically
    logged, monitored and/or recorded for legal purposes.
    >
    >
    >
    >
    >
    >The
    original of this email was scanned for viruses by the Government Secure
    Intranet virus scanning service supplied by Cable&Wireless Worldwide in
    partnership with MessageLabs. (CCTM Certificate Number 2009/09/0052.)
    On leaving the GSi this email was certified virus free.
    >Communications
    via the GSi may be automatically logged, monitored and/or recorded for
    legal purposes.
    >


    This email was received from the INTERNET and scanned by the Government Secure Intranet anti-virus service supplied by Cable&Wireless Worldwide in partnership with MessageLabs. (CCTM Certificate Number 2009/09/0052.) In case of problems, please call your organisation’s IT Helpdesk.
    Communications via the GSi may be automatically logged, monitored and/or recorded for legal purposes.


    The original of this email was scanned for viruses by the Government Secure Intranet virus scanning service supplied by Cable&Wireless Worldwide in partnership with MessageLabs. (CCTM Certificate Number 2009/09/0052.) On leaving the GSi this email was certified virus free.
    Communications via the GSi may be automatically logged, monitored and/or recorded for legal purposes.
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