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 ...

Two adjustments to the F test for variances are introduced that ameliorate the poor robustness properties of the test. A comparison of these adjustments to the classical F test, ...

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 ...