1. A priori comparisons are which one of the following? A Are planned in advance

Question

1. A priori comparisons are which one of the following? A Are planned in advance of the research B Often arises our of theory and prior research C May be done without examining the F ratio D All of above

2. For planned contrasts involving the control group, the Dunnetts' procedure is most appropriate, True or False?

3. Post hoc tests are necessary after an ANOVA given which one of the following? A H0 is rejected B There are more than two groups C H0i is rejected and there are more than two froups D You should always do post hoc tests after an ANOVA

4 Consider the situation where there are J=4 groups of subjects. Answer the following question:

a Construct a set of orthogonal contrasts and show that they are orthogonal.

b. Is the following contrast legitimate? Why or why not? Ho: u.1 – (u.2 + u.3 + u.4)

c. Using the same mean, how might the contrast in part (b) be altered to yield a legitimate contrast?

Explanation / Answer

1) A prior comparisons (B) Often arises our of theory and prior research. Because from prior research we may able to make desired comparisons.

2) For a planned contrast involving the control groups the dunnetts procedure is most appropriate is a True sentences.

3)Post hoc tests are necessary after an ANOVA given H0 is rejected and there are more than two groups.

Related Questions

Navigate

• Browse (All)
• Browse 1
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.