Are post hoc tests necessary following a significant ANOVA testing one independent variable with two levels (k = 2)? Explain.
a. Yes. When a variable has only two levels, then those two levels must be checked to determine if they are significantly different following a significant ANOVA. A post hoc test is necessary.
b. No. When a variable has only two levels, then those two levels must be significantly different following a significant ANOVA. There are no multiple comparisons to make, so a post hoc test is not necessary.
Answer: B
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