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Getting a curve to fit my points

  1. Sep 6, 2009 #1
    So, I have a table of data, and I'm trying to get a curve to fit the points.
    I haven't tried excel yet, but I have tried these things:
    1) Openoffice.org
    2) Gnumeric
    3) XMGrace

    - Gnumeric was straight-forward, but lacked many abilities.
    - Openoffice.org couldn't fit the curve well enough
    - And XMGrace wouldn't consider the maximum Y-value as a graphing constraint.

    So, I'm trying to figure out this:
    How do I fit a decent curve to my graph while having the curve feature take consideration of the maximum and minimum y-values?

    Take a look at this for more information:
    http://www.oooforum.org/forum/viewtopic.phtml?t=88559
     
    Last edited by a moderator: Apr 24, 2017
  2. jcsd
  3. Sep 6, 2009 #2
    Are you trying to fit to linear or non-linear data? Also, dont assume a good fit simply by looking at the results. Always ask yourself, could there be a better fit than mine? Lastly, are you familiar with the Chi Squared method?

    Thanks
    Matt
     
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