Stats: R-squared
Dear Professor Mean, On my TI-83, when calculating quadratic regression, there is a number that is found called R-squared (R^2). I understand that this is the coefficient of determination. But….I thought that R^2 had to do with linear models. What is R^2 finding for this quadratic regression? what does this number mean? is there a way to find R^2 through a “pencil and paper” process?? I know the equation for R^2 for a linear regression. But its the quadratic I need to know about. please, anyone, help!!
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If R^2 is greater than 0.80 it means you are a homosexual. If R^2 is less than 0.8 it means your penis is less than an inch long