PSY 305 Assignment 3*****A++ Rated Tutorial Already***** Use as a Guide Paper*****
Instructions- Calculate this ANOVA by hand. Check your work by also calculating the ANOVA in SPSS or EXCEL. Be sure to do any multiple comparison tests and interpret the results.
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Control GroupA1
PsychoanalysisA2
CBTA3
X1
7
7
3
X2
10
5
3
X3
6
6
2
X4
8
5
3
X5
10
5
4
X6
10
6
2
X barA1
S X (A1)
S X2
SST = S X2 – T2/an (also called [X] – [T])
SST = (a = number of groups, n = number in each group)
SST =
SSA = S A2 – T2 (also called [A] – [T])
n an
SSA =
SSA =
SSS/A = S X2 – S A2 (also called [Y] – [A] )
N
SSS/A =
Now divide by its df to change it to variance. Variance is called Mean Square.
Complete ANOVA summary table on next page.
ANOVA Summary Table
Source SS df MS F
A-group
S/A (error)
Total
Find F-critical.
Are the groups significantly different?
Write the results statistically.
What do you do next? Why?
Which groups are different?
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