1. The Tukey HSD procedure requires equal n\'s and equal means. True or False? 2

Question

1. The Tukey HSD procedure requires equal n's and equal means. True or False?

2. Applying the Bonferroni procedure, given a nominal family-wise error rate of 0.10 and two contrasts, what is the per contrast alpha?

3. Which of the following linear combinations of population means is not a legitimate contrast?

A (u.1+u.2+u.3)/3 -u.4 B u.1-u.4 C (u.1+u,2)-(u.3)-u.4) D u.1-u.2+u.3-u.4

4. If a family-based error rate for a is desired, and hypotheses involving all pairs of means are to be tested which method of multiple comparisons should be selected?

A Tukey HSD B Scheffe C Planned orthogonal contrasts D Trend Analysis E None of the above

Explanation / Answer

1. The Tukey HSD procedure requires equal n's and equal means. - TRUE

2. Applying the Bonferroni procedure, given a nominal family-wise error rate of 0.10 and two contrasts, what is the per contrast alpha.

Answer: 0.10 / 2 = 0.05

3. Which of the following linear combinations of population means is not a legitimate contrast?

Correct answer: option A (u.1+u.2+u.3)/3 -u.4

since sum of all coefficient of means is not equal to zero

4. If a family-based error rate for a is desired, and hypotheses involving all pairs of means are to be tested which method of multiple comparisons should be selected?

Correct answer: E None of the above

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