In: Statistics and Probability
A researcher conducts a study on the effects of amount of sleep on creativity. Twenty subjects come to the researcher’s clinic. The researcher divides the subjects into four groups, each containing five subjects. Each group sleeps at the clinic for a different amount of time (2, 4, 6, or 8 hours). After awakening, each subject takes a test of creativity. The following table shows the creativity scores for the subjects in each group:
Amount of Sleep (in hours) |
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2 |
4 |
6 |
8 |
3 |
4 |
10 |
10 |
5 |
7 |
11 |
13 |
6 |
8 |
13 |
10 |
4 |
3 |
9 |
9 |
2 |
2 |
10 |
10 |
Source |
df |
SS |
MS |
F |
Between-groups |
187.75 |
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Within-groups |
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Total |
242.95 |
Comparison |
X-X |
Q |
2hrs – 4hrs |
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2hrs – 6hrs |
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2hrs – 8hrs |
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4hrs – 6hrs |
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4hrs – 8hrs |
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6hrs – 8hrs |