## Multiple choice questions

Which of the following statements about MANOVA is correct?

1. MANOVA is appropriate for data that have one or more dependent variables and more than two independent variables.
2. MANOVA is appropriate for data with two or more dependent variables and one or more independent variables.
3. MANOVA is appropriate for data with two or more dependent variables and only one independent variable.
4. MANOVA is appropriate for data with only one dependent variable and more than three independent variables.

#### Answer: MANOVA is appropriate for data with two or more dependent variables and one or more independent variables

The power of MANOVA to detect an effect depends on:

1. A combination of the correlation between dependent variables and the effect size to be detected.
2. A combination of the correlation between independent variables and the effect size to be detected.
3. A combination of the correlation between independent and dependent variables.
4. None of these

#### Answer: A combination of the correlation between dependent variables and the effect size to be detected

What would you use Box’s test for?

1. To test for multivariate normality.
2. To test for independence of residuals
3. To test for homogeneity of variance
4. To test the assumption of homogeneity of covariance matrices.

#### Answer: To test the assumption of homogeneity of covariance matrices

If your MANOVA is statistically significant:

1. You could conduct separate Bonferroni corrected ANOVAs on each dependent variable.
2. There is no added value in performing discriminant function analysis.
3. You could conclude that all groups differ significantly.
4. None of these are correct.

#### Answer: You could conduct separate Bonferroni corrected ANOVAs on each dependent variable

A square matrix in which the diagonal elements are equal to 1 and the off-diagonal elements are equal to 0 is known as: