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Hi, I have a (possibly embarrassingly simple) question. How can I reproduce the line that I added to a graph using as a least squares lines with a plotted function? I am asking in part because I want to better understand how to plot other functions, i.e., one that will fit this data well! I tried:
f() = b + x
f() = x
But, these didn’t seem to do the trick. Thank you.
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Hi,
The following should work:
2.39*x-5.6
2.39*Day-5.6
Or you could create two sliders, a and b, adjusted to -5.6 and 2.39. Then you would plot
b + a*Day or
b + a*x
I hope that helps,
Bill
Thanks – that did the trick.
Is it possible (or on the docket) to facilitate adding a line of best fit that uses a function other than a linear model (i.e., could you fit a quadratic function)?
Thank you very much!
Josh
Hi Josh,
It is possible, of course to add quadratic fitting. That starts us down a slippery slope, though, that includes polynomial fitting and exponential/logarithmic fitting. All that functionality can be pretty off-putting to non-math-geeks. So we’d have to figure out how to provide it without cluttering things up. Maybe in a plugin?!
Bill
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