Results 1 to 2 of 2

Math Help - [SOLVED] data question

  1. #1
    Newbie
    Joined
    Aug 2008
    Posts
    1

    Exclamation [SOLVED] data question

    look this question might seem really easy but i am not particularly good at data and that stuff. :P

    Age Frequency
    15-29 470
    30-44 165
    45-59 93
    Total 728

    How do you work out the:
    mean
    median


    please help me
    Follow Math Help Forum on Facebook and Google+

  2. #2
    Junior Member Serena's Girl's Avatar
    Joined
    Jul 2008
    Posts
    27
    To determine the mean:

    Take the mean of each age group. We can assume an equal distribution of ages among each age group.

    Mean of 15-29: (15+29)/2 = 22
    Mean of 30-44: (30+44)/2 = 37
    Mean of 45-59: (45+59)/2 = 52

    Then, for each group, multiply the mean by the frequency of that group. Add all three products, then divide by the total number of participants.

    For 15-29: 22 * 470 = 10,340
    For 30-44: 37 * 165 = 6,105
    For 45-59: 52 * 93 = 4,836

    Total: 21,281

    The mean is: 21,281 / 728 = 29.23

    To calculate the median:

    The median has very little to do with the frequency. So just take the mean of the two extremes to determine the median:

    (15+59)/2 = 37
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. [SOLVED] Interpolating z(x,y) data point from 4 data points (rectangular)?
    Posted in the Advanced Applied Math Forum
    Replies: 2
    Last Post: June 20th 2011, 06:04 PM
  2. Replies: 2
    Last Post: July 6th 2010, 06:33 PM
  3. Replies: 4
    Last Post: March 23rd 2010, 10:52 AM
  4. [SOLVED] Poisson Data on shifts
    Posted in the Advanced Statistics Forum
    Replies: 2
    Last Post: January 15th 2009, 11:35 AM
  5. [SOLVED] Data Management Homework
    Posted in the Statistics Forum
    Replies: 1
    Last Post: October 8th 2007, 10:47 PM

Search Tags


/mathhelpforum @mathhelpforum