what is the trade off in cross validation when the error rate is higher with large k, why is the variance higher? variance trade-offs cross validation what is the trade-off between a bias and a variance? what is the trade-off of the k-fold cv which variance is higher when k-fold is used what is a variation trade-off why does variance trade off with bias in cross validation is k-fold a variance what's the difference between a variance and a bias why does the variance of k-fold why does variance trade off how are variances trade-offs measured how to calculate error in cross validation how is variance affected in cross validation if k is a large k, does variance increase what is the difference between a cv error and a variance? variance trade off definition what is variance trade off cv variance vs bias