Author:
Christine Farr

1. How are independent samples t-tests and One-way ANOVAs similar? How do the two tests differ? (Points : 12)

Question 2.2. What is the F-ratio? That is, what makes up the top and bottom portions of the F-ratio? (Points : 10)

Question 3.3.A social psychologist conducted a study examining the effectiveness of two persuasion techniques. She found the following information in her ANOVA table:

SS between = 45.55

SS within = 30.22

SS total = 75.77

Using eta squared, calculate the effect size for her study? What does this mean? (Points : 10)

Question 4.4.A researcher is interested in how caffeine affects stress. One group gets no caffeine and the other gets 3 cups of coffee.Complete the ANOVA table

ANOVA Summary Table

Source

SS

df

MS

F

A-group

150

1

S/A (error)

25

18

Total

175

19

Fill-in the missing A-group MS value:

(Points : 5)

Question 5.5.A researcher is interested in how caffeine affects stress. One group gets no caffeine and the other gets 3 cups of coffee.Complete the ANOVA table

ANOVA Summary Table

Source

SS

df

MS

F

A-group

150

1

S/A (error)

25

18

Total

175

19

Fill-in the missing S/A MS value:

(Points : 5)

Question 6.6.A researcher is interested in how caffeine affects stress. One group gets no caffeine and the other gets 3 cups of coffee.Complete the ANOVA table

ANOVA Summary Table

Source

SS

df

MS

F

A-group

150

1

S/A (error)

25

18

Total

175

19

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