Page 74 - E-Modul Statistika Pendidikan

Subjek Prestasi Belajar
2
X1 X1 X2 X2
2
3 5 25 7 49
4 6 36 8 64
5 6 36 7 49
6 5 25 6 36
7 7 49 9 81
8 5 25 8 64
9 6 36 7 49
10 5 25 6 36
Σ 56 318 71 513

3. Memasukkan Data ke dalam Rumus

X1 X2
M1 = --------- M2 = ---------
N1 N2
56 71
M1 = --------- = 5,60 M2 = --------- = 7,10
10 10

 X 2   X  2
SD = 1 −  1 
1
n 1  n 1 
318  56 2
SD 1 = −  
10  10 

SD 1 = 31 8 , − 6 , 5 2
SD 1 = 31 8 , − 31 , 36

SD 1 = , 0 44
SD 1 = , 0 66
2 =
SD1 0,44

 X 2   X  2
SD = 2 −  2 
2
n  n 2 
2  
513  71 2
SD = −  
2
10  10 
SD 2 = 51 3 , − 1 , 7 2
SD 2 = 51 3 , − 50 , 41
SD 2 = , 0 89
SD = 0,94

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