F Test Statistics. F statistic f value σ 12 σ 22 200 50 4 step 3. Df 1 n 1 1 11 1 10.
The test statistic in an f test is the ratio of two scaled sums of squares reflecting different sources of variability. Larger values represent greater dispersion. In contrast t tests can evaluate just one term at a time.
You can use them in a wide variety of settings.
General steps for an f test state the null hypothesis and the alternate hypothesis. This test can be a two tailed test or a one tailed test. Find the f statistic the critical value for this test. In contrast t tests can evaluate just one term at a time.
