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In: Statistics and Probability

Researchers compared the effectiveness of a mood induction technique (exposure to depressing film footage) across 3...

Researchers compared the effectiveness of a mood induction technique (exposure to depressing film footage) across 3 different groups of 11 participants each: 1) 0 minutes exposure (Control Group), 2) 10 minutes exposure, & 3) 20 minutes exposure.  The response variable is the score on the Beck Depression Inventory (higher score = more depressed mood).

M1 = 7 M2 = 11 M3 = 12
SS1 = 56 SS2 = 96 SS3 = 62
n1 =   11 n2 =   11 n3 =   11

SSTOTAL = 368

Regardless of whether or not your ANOVA allows you do to post hoc analyses, conduct a post hoc analysis and write the final answer for post-hoc analysis and a statistical conclusion explaining which groups are different, if any.

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orchestra answered 1 year ago
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