In an analysis of variance ANOVA, a post-hoc HSD test is Select one: a. done when...
In an analysis of variance ANOVA, a post-hoc HSD test is
Select one:
a. done when the null hypothesis is rejected.
b. done before the computed F is compared to the critical value of F.
c. not done if all the means are similar except one.
d. always done when there are four or more groups.
Homework Answers
Answer
Post hoc HSD test is performed only when we reject the null hypothesis and found that there is at one pair of means which is significantly difference
so, option A is correct answer
option B is incorrect because we can never perform post hoc HSD test before completing the ANOVA
option C is incorrect we do HSD test when there is at least one mean different from other mean
option D is incorrect because it can be done for 3 groups as well
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