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Unformatted text preview: 2) Homogeneity of variance in groups. Groups have to have relatively same variance. Variance is a measure of the amount of differences? 3) We want to use parametric test. Higher power. Capability to show two means are different even though they are relatively the same. Nonparametric Neither assumption needed. Use F test to test for homogeneity of variance. We try to avoid it when we can due to low power. Difference between means has to be pretty big usually for this test to work. Chi-Square Test Use this test in genetics because when the data comes in ratio form, this test is well suited to those assumptions....
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- Spring '08