How do I Calculate this ANOVA by hand.

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 bar_A1

SX (_A1)

SX²

SS_T = SX² - T²/an(also called [X] - [T])

SS_T = (a = number of groups, n = number in each group)

SS_T =