In the Two-Sample Test for Variances task, you can test whether two variables have different variances, or, if you have a single variable that contains values for two groups, you can determine whether ...

Bartlett's (1937) test for the equality of several variances is a modification to the standard likelihood ratio test. The test assumes that the observations involved are independent and their ...

In this paper statistical test criteria are developed for testing equality of means, equality of variances and equality of covariances in a normal multivariate population of k variables on the basis ...

The difference-from-nominal chart should be accompanied by a test that checks whether the variances for each product type are identical (homogeneous). Levene's test of homogeneity is particularly ...

J.B. Maverick is an active trader, commodity futures broker, and stock market analyst 17+ years of experience, in addition to 10+ years of experience as a finance writer and book editor. T-tests are ...