A research study was conducted to examine the clinical efficacy of a new antidep
ID: 3181330 • Letter: A
Question
A research study was conducted to examine the clinical efficacy of a new antidepressant. 5 depressed patients were randomly assigned to each of 3 groups, including a placebo group. After four weeks of treatment, the patients completed the Beck Depression Inventory. The higher the score, the more depressed the patient. The data presented below was part of the ANOVA results obtained after collecting the data.
Source of Variation
SS
df
MS
F
Treatment
1,302.58
Error
596.66
Total
The mean square for the error is _______ (use two decimal places)
Source of Variation
SS
df
MS
F
Treatment
1,302.58
Error
596.66
Total
Explanation / Answer
Hence,
The mean square of error is 49.72
Source of Variation SS df MS F Treatment 1302.58 3 - 1 = 2 1302.58 / 2 = 651.29 Error 596.66 15 - 3 = 12 596.66 / 12 = 49.72 Total 15 - 1 = 14Related Questions
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