PSY 305 Assignment 3 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. X1 X2 X3 X4 X5 X6 X barA1 Control GroupA1 7 10 6 8 10 10 PsychoanalysisA2 7 5 6 5 5 6 CBTA3 3 3 2 3 4 2 X (A1) X2 SST = X2 - T2/an (also called [X] - [T]) SST = group) (a = number of groups, n = number in each SST = SSA = A2 - T2 n an (also called [A] - [T]) SSA = SSA = SSS/A = X2 - A2 n (also called [Y] - [A] ) SSS/A = Now divide by its df to change it to variance. Variance is called Mean Square. Complete ANOVA summary table on next page. 1 ANOVA Summary Table Source A-group S/A (error) Total SS df MS F Find F-critical. Are the groups significantly different? Write the results statistically. What do you do next? Why? Which groups are different? 2