101
x1 = x
2
= x
3
= x
4
= x
5
=
x
6
=
45.70 + 40.94 + 43.44 + 46.37 + 46.12
=
44.51
5
44.80 + 41.37 + 45.19 + 47.10 + 43.36
=
44.36
5
42.97 + 45.70 + 46.51 + 44.00 + 42.20
=
44.28
5
45.38 + 47.31 + 44.61 + 45.61 + 43.67
=
45.32
5
42.79 + 45.94 + 43.50 + 46.86 + 41.85
=
44.19
5
42.60 + 44.44 + 46.85 + 44.57 + 43.49
=
44.39
5
2. Hitung harga rata-rata sampel
?
x
i
x
=
k
x
=
44.51 + 44.36 + 44.28 + 45.32 + 44.19 + 44.39
=
44.51
6
3. Hitung standar deviasi sebenarnya
d
=
?=
(x
i
-
x)
2
N
-
1
d
=
92.4948
=
1.79
29
4. Hitung standar deviasi dari distribusi harga rata-rata sub grup
d
x
=
d
n
1.79
0.80
d
x
=
=
5
 |