1. The correlation coefficient provides all of the following types of information, EXCEPT:

A. whether or not there is a relationship between the variables.

B. the strength of the relationship between the variables.

C. the cause of the relationship between the variables.

D. the direction of the relationship between the variables.

Answer Key

2. Another name for a bar graph is:

A. polygon

B. histogram

C. normal curve

D. line graph

Answer Key

3. A table that shows how often different scores appear in a set of scores is called a frequency:

A. polygon

B. histogram

C. normal curve

D. distribution

Answer Key

4. All the following are components required for estimating power (1-beta) of a study, EXCEPT

A. The population effect size

B. Sample size

C. Level of significance (alpha)

D. Standard deviation

Answer Key

5. Using power anlysis (Cohen, 1977), the value of estimated effect size (gamma) for large effects in two group test of mean difference is

A. 0-2

B. 0.5

C. 0.8

D. 1.0

Answer Key

6. When doing power analysis in an ANOVA context, the estimate of effect size is

A. Eta-squared

B. Correlation coeficient

C. Standard Error

D. Chi-squire value

Answer Key

7. Analysis of Variance (ANOVA) test is used to

A. Test the difference between two independent group means

B. Test the difference between two related group means

C. Test the difference among the means of 3+ independent groups

D. Test the difference in ranks of scores of 3+ independent groups

Answer Key

9. Which is the most appropriate inferential analysis to test the difference among the means of 3+ related groups o sets of scores?

A. Repeated-measures ANOVA

B. Friedman test

C. Paired t-test

D. Wicoxon signed-rank test

Answer Key

10. Power analysis builds on the concepts of

A. Validity

B. reliability

C. Internal consistancy

D. Effect size

Answer Key

11. Effect size is used to calculate

A. Reliability

B. Sample size

C. Internal consistancy

D. Predictive validity

Answer Key

12. The F-statistic is calculated in

A. ANOVA

B. T-test

C. Correlation analysis

D. Chi-squire test

 

13. Which of the following is a nonparametric "Analysis of Variance"?

A. Mann-Whitney U test

B. Wilcoxon Rank test

C. Kruskal-Wallis test

D. Friedman's test

 

14. Chi-square test is used to test

A. Difference in proportions

B. Difference in means of two independent variables

C. Relationship between two bivariate variables

D. Difference in means of three or more set of variables

 

15. Which of the following is NOT a criteria for Fisher's exact test?

A. When proportions derived from independent groups are compared

B. When there are cells with a value of 0

C. Sample size is small (less than 30)

D. When testing difference between three or more group means

 

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