which is the best value for filtering a variable based on variance? why filter variables based on variance how to filter a sample based on a variable's variance prefilter based on variance what's the logic behind pre-filtering data what is the logic of pre filtering what kind of information is needed to filter a variable? what is a normal limit for a prefiltering variable? why do you filter on the variance based on the sample size? what is the logic behind pre filtering data what is the logic behind filtering? why do you filter data based on variance why filter variables based on variance how to filter data based on a variance what is the logic of a filter for variance? what does the pre filtering feature do can we filter variables based on variance and frequency what is the logic behind a filter based on variance? why would you filter a variable based on variance ________ is a value of the variance of the variable with the greatest variance.