what is the pooled variance for ck variance can you estimate the variance of a statistic what is the variance for cv what is the variance calculated from the cross validation run which is better pooled variance or cross validation what is a pooled variance when using a cross validation, what is the variance estimate? when does a pooled variance estimate occur on a cross validation which statement should be used in calculating a variance from a pooled standard deviation? what is variance estimate can you use a pooled variance across cross validation what is variance estimator can you compute the variance of a sample which statement does the cv use for the variance? can i estimate variance from all cross validation run? what is the standard variance estimate what is the difference between a standard variance estimate and a pooled variance why use pooled variance can a k-fold variance be used for estimating a classification error? when calculating variance, why k-fold cross validation