Results 1 to 3 of 3

Math Help - Scatter Graphs, how to plot data when dealing with large numbers

  1. #1
    Newbie
    Joined
    Apr 2013
    From
    England
    Posts
    2

    Scatter Graphs, how to plot data when dealing with large numbers

    Hi all,

    This may seem a basic question but I am really struggling to work it out (maths and stats really not my strong point!) I'm currently hand drawing a scatter graph for my first Uni assignment and need to plot some data along the Y axis. On my X axis I have used increments of 2 squares (on the graph paper) in order to present percentages from 0-100. This part was simple but now I need to plot data on the Y axis. The smallest number I need to plot is 80,000 and the largest 240,000,000.

    Really not sure how to do this without literally squashing my data into the graph...0.8 and 239.6 are the exact numbers I have been given, but there's a key that clearly indicates this is per 100,000 - so I have mulitiplied them by 100,000 so you have an idea of numbers I am dealing with. I will however need to plot with 0.8 as my lowest and 239.6 as my highest. I am going to round up to 240 in order to help with dividing the axis up equally. I just need to know how many increments, because whenever I divide 240 million by 30 squares or whatever that isn't working out...

    Please help!
    Follow Math Help Forum on Facebook and Google+

  2. #2
    Newbie
    Joined
    Apr 2013
    From
    SoCal
    Posts
    4

    Re: Scatter Graphs, how to plot data when dealing with large numbers

    I can't tell from your question whether the data you are plotting really contain only 2 points (0.8 & 239.6) or whether there are additional data between the two.

    In any event, the only idea I can think of is if you have a gap in your data, you could use a double hash mark across the Y axis to "skip" values"

    For example, if your data look like this:

    0.8
    1.0
    100.6
    180.7
    239.6

    There is a very large gap between the first two data points and the rest. In this case, you could create a graph where you skip, or abbreviate, the Y axis to get rid of this gap.

    239.6 |
    |
    |
    |
    |
    |
    |
    100.6 |
    =
    1.0 |
    0.8 |
    ---------------------------------------------------------------

    The two horizontal lines across are universally recognized to mean a break in the numbering of the Y axis. You can see an example at this link.

    I hope that helps!

    -S

    Edit: sorry the above graph looks like garbage. I guess the forum posting doesn't like spaces at the start of a line.
    Last edited by Sarfa33; April 9th 2013 at 03:20 PM. Reason: Apology
    Follow Math Help Forum on Facebook and Google+

  3. #3
    Newbie
    Joined
    Apr 2013
    From
    England
    Posts
    2

    Re: Scatter Graphs, how to plot data when dealing with large numbers

    Thank you very much for your help, that's helped me look at alternative ways to deal with this data!! Many thanks
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. analyzing the scatter plot
    Posted in the Advanced Statistics Forum
    Replies: 2
    Last Post: September 12th 2012, 10:50 PM
  2. scatter plot
    Posted in the Statistics Forum
    Replies: 2
    Last Post: May 10th 2011, 06:27 AM
  3. statgraphics scatter plot
    Posted in the Math Software Forum
    Replies: 0
    Last Post: June 29th 2010, 10:53 PM
  4. scatter plot
    Posted in the Advanced Statistics Forum
    Replies: 2
    Last Post: March 4th 2009, 02:42 PM
  5. scatter plot
    Posted in the Advanced Statistics Forum
    Replies: 3
    Last Post: September 12th 2007, 07:41 PM

Search Tags


/mathhelpforum @mathhelpforum