Examine the following ANOVA summary table:

Source SS df MS F

Between 495.34 4 123.84 8.16

Within 682.56 45 15.17

Total 1,177.90 49

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Since between has 4 degrees of freedom, there are 5 groups.

Since the total has 49 degrees of freedom, the total number of observations is 50

Thus there are 5 groups each group having 10 observations each.

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