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K fold CV calculation #51

Closed tkinsella333 closed 4 years ago

tkinsella333 commented 4 years ago

I believe the book lists the K-fold cross validation calculation as the unweighted average of the MSE of each of the k folds, however, in your slides you calculate a weighted average. Do you care which method we implement for this lab and going forward?

LucyMcGowan commented 4 years ago

The weighted average is a little more precise, so in general I prefer that, in the limit they’ll be approximately equal, though