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Simulation Project

The problem considered here is to compare several methods for ANOVA under different conditions.

Method 1:
Perform Levene's test for homogeneity of variance. If this test does not reject the null hypothesis, then perform ANOVA. If the F-test does not reject then say all means are equal. If the F-test rejects, then perform pairwise t-tests with no adjustment of p-values. If Levene's test rejects the null hypothesis, then perform pairwise t-tests with adjusted p-values method holm.

Method 2:
Same as Method 1 except use p-value adjustment method fdr instead of holm

Method 3: perform pairwise t-tests with adjusted p-values method holm.

Method 4: perform pairwise t-tests with adjusted p-values method fdr.

Method 5:
Perform Kruskal-Wallis test (kruskal.test). If this tests does not reject, then say all means are equal. If the Kruskal-Wallis test rejects, then perform pairwise rank sum tests (pairwise.wilcox.test) with no adjustment of p-values.

Link to scripts and data is here:
http://www.utdallas.edu/~ammann/stat6341proj



ammann
2017-12-10