Calculating Mean and Variance from Frequency Distribution

1
2
3
4
5
6
X
f
f(X)
x = (X-)
f(x)
f(x)2
0
2
1
3
2
5
3
6
4
7
5
7
6
5
N =
Σf(X) =
0
Σf(X-)2 =
1
2
3
4
5
6
X
f
f(X)
x = (X-)
f(x)
f(x)2
0
6
1
11
2
6
3
5
4
3
5
2
6
1
N =
Σf(X) =
0
Σf(X-)2 =