college major tier list
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Financial math, accounting, investment banking, actuary studies, mathematics
Nigga u dumb
Any liberal art, fine art, or language
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I usually visit /b/ and /g/ but I really need some help on this one. It's about chi squared compared to r squared. And yes, it's somehow related to homework. Here's the deal. I have 3 data sets containing 4 points with x and y coordinates. I have to figure out which one is a linear growth, exponential growth and a parabole-shaped growth. Since an exponential growth is shown as a straight line in a lin-log graph paper, I figured I could just plot all data sets make a simple regression and conclude that the data set with the highest r squared value would be the exponential growth. Of course I could see that the line fits quite good, but I want something to back up my claim.
I use Grapher to plot the data, but I can only make an "interpolation", not a regression. So far it seems like the same, and after some googling that didn't help a whole lot, I decided to go on with the interpolation. Now I have to insert some "start values" to get it working. After a few tries a=1 and b=2 seems to work, but I have no idea HOW and WHY it worked. When trying with the default a=0 and b=1 I get a "interpolation interrupted, reached a singularity". Either way, I continued.
End of pt 1 (because of a too long post)