Question 5 A significant f-ratio means that: a. The within-groups variance is le

Question

Question 5 A significant f-ratio means that: a. The within-groups variance is less than 1 b. The between groups variance is less than 1. c. The between groups variance is less than the within groups variance d. The between groups variance is greater than the within groups variance

Question 6 When would it be most appropriate to use an ANOVA? a. When you are looking at the difference in reading scores between men and women b. When comparing the difference between the IQ of the general population and the IQ of Drexel students. c. When you want to compare someone's pretest score to their post-test score d. When you are comparing the effectiveness of three different psychotherapy treatments.

Question 7 If the F-ratio is equal to 1... a. The null hypothesis should not be rejected b. The variance between groups is equal to the variance within groups c. The research hypothesis should be accepted d. Both A & B 2

Question 8 Which is not an assumption of ANOVA? a. Variables are correlated with each other b. Population has equal variance c. Data follows a normal curve d. Scores/observations are independant of each other

Explanation / Answer

Question 5: Answer: d. The between groups variance is greater than the within groups variance

Formula of f ratio has mean square of between groups on the numerator and mean square of within groups on the denominator.

Question 6: Answer: d. When you are comparing the effectiveness of three different psychotherapy treatments.

ANOVA is used when there are more than 2 groups.

Question 7: Answer: d. Both A & B

Question 8: Answer: a. Variables are correlated with each other

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