Complete each of the following ANOVA summary tables. In addition, answer the following questions for each of the ANOVA summary tables:
- What is the factorial notation?
- How many conditions were in the study?
- How many subjects were in the study?
- Identify significant main effects and interaction effects.
Source
|
df
|
SS | MS | F |
A
|
1 | 60 | ||
B
|
2 | 40 | ||
A X B
|
6 | 150 | ||
Error
|
72 | |||
Total
|
39 | 150 |
A researcher is attempting to determine the effects of practice and gender on a timed task. Participants in an experiment are given a computerized search task. They search a computer screen of various character and attempt to find a particular character on each trial. When they find the designated character, they press a button to stop a timer. Their reaction time (in seconds) on each trial is recorded. Subjects practice for 2, 4, or 6 hours and are either female or male. The reaction time data for the 30 subjects appear here
Women | Men | |||
2 Hours | 12 | 11 | ||
11 | 12 | |||
13 | 12 | |||
12 | 13 | |||
11 | 12 | |||
4 Hours | 11 | 11 | ||
10 | 8 | |||
10 | 8 | |||
10 | 10 | |||
8 | 10 | |||
7 | 9 | |||
6 Hours | 7 | 8 | ||
5 | 6 | |||
7 | 8 | |||
6 | 6 | |||
7 | 8 | |||
Source | df | SS | MS | F |
Gender | 0.027 | |||
Practice | 140.60 | |||
Gender X Practice | 0.073 | |||
Error | 28.00 | |||
Total | 168.70 |
- Complete the ANOVA summary table using the preceding data to calculate the sum of squares.
- Are the values of Fobt significant at cx =.05? At cx =.01?
- What conclusions can be drawn from the F-ratio
- What is the effect size, and what does this mean?
- Graph the means