TUGAS 5 OKE
TUGAS 5
I. Hasil Ulangan Statistik sebagi berikut : 6, 7, 8, 6, 7, 7, 6, 5, 8
Hitunglah :
1. Deviasi rata-rata
2. Varians
3. Simpangan bakunya
Penyelesaian :
1. DEVIASI RATA-RATA
X X
1
DR X X
2
n
6 7 8 6 7+7+6+5+8
X
6, 66 7
9
Xi X 6 - 7 7 - 7 8 - 7 6 - 7 7 - 7 7 - 7 6 - 7 5 - 7 8 - 7 7
DR
Xi X
n
7
0, 77
9
2. VARIANS
6 7 8 6 7+7+6+5+8
6, 66 7
9
X
x
X X
X X
6
7
8
6
7
7
6
5
8
60
-1
0
1
-1
0
0
-1
-2
1
1
0
1
1
0
0
1
4
1
9
s2
X - X
n-1
9
9 -1
1,125
3. SIMPANGAN BAKU
s
( X X)
n1
9
9 1
1,125
1, 060
2
2
X
2
36
49
64
36
49
49
36
25
64
408
I. Hasil Ulangan Statistik sebagi berikut : 6, 7, 8, 6, 7, 7, 6, 5, 8
Hitunglah :
1. Deviasi rata-rata
2. Varians
3. Simpangan bakunya
Penyelesaian :
1. DEVIASI RATA-RATA
X X
1
DR X X
2
n
6 7 8 6 7+7+6+5+8
X
6, 66 7
9
Xi X 6 - 7 7 - 7 8 - 7 6 - 7 7 - 7 7 - 7 6 - 7 5 - 7 8 - 7 7
DR
Xi X
n
7
0, 77
9
2. VARIANS
6 7 8 6 7+7+6+5+8
6, 66 7
9
X
x
X X
X X
6
7
8
6
7
7
6
5
8
60
-1
0
1
-1
0
0
-1
-2
1
1
0
1
1
0
0
1
4
1
9
s2
X - X
n-1
9
9 -1
1,125
3. SIMPANGAN BAKU
s
( X X)
n1
9
9 1
1,125
1, 060
2
2
X
2
36
49
64
36
49
49
36
25
64
408