A memory researcher wanted to test the impact of various strategies to improve memory. She randomly assigned 10 subjects to each of four groups. All subjects were presented a list of words to recall. One group she presented the words and then tested recall (Control). In another group she told the subjects to associate the words with a particular location in their house (Loci). Another group she told the subjects to imagine think of an image of each word. Lastly a final group was instructed to think of a word that rhymes with each word (Rhyme). The number of words recalled by each subject is listed below.

Control Loci Image Rhyme

11 10 13 16

4 18 16 9

8 6 3 7

3 20 6 10

11 15 13 9

8 9 10 14

2 8 13 16

5 11 9 3

8 12 5 9

5 12 19 12

3. After conducting a one-way ANOVA of the above data, which of the following is the variability among the group means _________.

a. 17.944

b. 15.5

c. 57.967

d. 173.9

4. Refer to the memory study. After conducting a one-way ANOVA of the above data, which of the following is the average variance within each of the four groups.

a.17.944

b. 15.5

c.57.967

d. 173.9

5. Refer to the memory study. After conducting a one-way ANOVA of the above data, which of the following is the F critical using alpha at .05.

a. 3.63

b. 2.92

c. 5.12

d. 4.46

6. If I have four groups, and a total of 40 subjects in the entire experiment, how many within groups degrees of freedom do I have.

a. 39

b. 3

c. 36

d. 28

7. Refer to the memory . Which of the following is the denominator for the F ratio.

a.21.944

b. 15.5

c. 57.967

d. 17.944

8. Refer to the memory study Estimate the size of the effect. Using omega squared.

a. 0.2376

b. 0.6698

c. 1.6633

d. 0.1433

9. Refer to memory study. Estimate the size of the effect using Cohen's f.

a. 1.4244

b. 0.6698

c. 0.4100

d. 1.5546