Rumus varian dan simpangan baku

Varians

1
s=
n
2

[∑

]

2

2

fX −

( ∑ fX )
n

[


2

( 61193 )
1
s=
48237341−
80
80
2

s 2=
2

s=
2

s=

]


[

1
3744583249
48237341−
80
80
1
[ 48237341−46807291 ]
80
1
[ 1430050,39 ]
80

2

s =1430050,3

Simpangan Baku


√[

1
s=
n

2

∑f X −
2

s= √ 1430050,3
s=1195,85

( ∑ fX )
n

]


]