Hi, I need to compute a prediction R-squared for a linear regression. I have figured out how to compute Allen's PRESS statistic (using the PRESS function in the MPV library), but also want to compute the R-squared that goes along with this statistic. I have read that this is computed like an adjusted R-squared, but using the same regressions that are used to compute the PRESS statistic. I am trying to duplicate the prediction R-squared that is computed in Minitab. Thanks for any help! Tom
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