The post-hoc test which holds the familywise error rate at .05 by running each individual test at the c/alpha level ( comparisons/alpha) is the
a. Fisher's LSD.
b. Bonferroni.
c. Newmann Keuls.
d. Tukey test.
Question 2
In multiple comparison procedures, post-hoc tests are completed after the ANOVA. Why are post-hoc tests preferred over running several t-tests?
a. They decrease the probability of a Type I error.
b. They do not control familywise error rate.
c. It increases the probability of a Type I error.
d. They are more likely to be significant.
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