A study investigated the effects of physical fatigue on the performance of profe

Question

A study investigated the effects of physical fatigue on the performance of professional tennis players. Researchers measured the number of unforced errors committed by a random sample of 12 professional tennis players during the first three sets of a match. They hypothesized that increased fatigue would be associated with a greater number of errors. The following is an F-table for this hypothetical study using the one-way within-subjects ANOVA.

(a) Complete the F-table.

Source of Variation SS df MS Fobt Between groups 12 Between persons 5 Within groups (error) 44 Total

Explanation / Answer

as there are 3 groups and 12 persons

hence df between persons =12-1=11

and df between groups =3-1=2

therefore below is complete F table:

SS df MS Fobt between groups 24 2 12 6 between persons 55 11 5 2.5 error 44 22 2 total 123 35

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