T-Test: What It Is With Multiple Formulas and When to Use Them

Read on to learn more about what a t-test is, the different formulas used, and when to apply each type to compare means and ...
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Fixing the F Test for Equal Variances

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, ...