Prblem 2 Khalid was interested in the effects of journal therapy ondepression. H

Question

Prblem 2

Khalid was interested in the effects of journal therapy ondepression. He randomly assigned 60 individuals who have beenclinically diagnosed with severe depression to three treatmentgroups. Individuals in the first group wrote intensively abouttheir feelings in journals for an hour each day for three weeks andreceived only journal therapy and the third group received onlyregular counseling. All 60 participants were given a depressioninstrument before and after treatment. When reviewing the data, itwas observed that the variances in the group were not equal.

What type of data do you have? What are the variables? Which is thetest that best analyzes the results? What is your reasoning.

Explanation / Answer

1)The type of data is numerical data. 2)The variables are depression to three treatment groups andthe depression instrument before and after treatment. 3)Wilcoxon sum rank test is a non-parametric test which is thebest method when the variances in the groups were not equal. 4)Because this is alternative to the two sample t test.

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