23A. A health psychologist is interested in whether certain situations produce different amounts of stress. A...

23A. A health psychologist is interested in whether certain situations produce different amounts of stress. A group of 15 students is randomly assigned to one of three groups. The students in group 1 have their stress levels measured immediately after returning from vacation. The students in group 2 have their stress levels measured after they have been in class for a week. The students in group 3 have their stress levels measured immediately before final exams week. Use this information to complete the ANOVA table provided below.

ANOVA TABLE
Source	SS	df	MS	F
Between	_____	_____	102	_____
Within	_____	_____	_____
Total	257	_____

23B. Using the ANOVA table above, calculate the least biased measure of effect size.

23C. Interpret (in words) the magnitude of effect you computed above.

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