Hedron123 Posted November 30, 2008 Report Share Posted November 30, 2008 Hey, I'm working on an IB Maths SL task and I wanted to know something. I have data points from which I generated a quadratic and a cubic function (by means of simultaneous equations). However, none of these functions fit the data points perfectly. How can I see which of the two functions fits the points better? Thanks for everything! Reply Link to post Share on other sites More sharing options...
moneyfaery Posted November 30, 2008 Report Share Posted November 30, 2008 Find the r[sup]2[/sup] values for the regressions. The eqn with a value closer to 1 is the better fit. Reply Link to post Share on other sites More sharing options...
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