Failed to connect to MySQL: Access denied for user 'examnext_online'@'localhost' (using password: YES) Let `sigma^2`is variance of following frequency distribution`X_i`123456789`F_i`101794111 Then `sigma^2` is equal to- - Sarthaks eConnect

Let `sigma^2` is variance of following frequency distribution
`X_i`
1
2
3
4
5
6
7
8
9
`F_i`
1
0
1
7
9
4
1
1
1
Then `sigma^2` is equal to-

Let `sigma^2` is variance of following frequency distribution

`X_i`	1	2	3	4	5	6	7	8	9
`F_i`	1	0	1	7	9	4	1	1	1

Then `sigma^2` is equal to-

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Let `sigma^2` is variance of following frequency distribution`X_i`123456789`F_i`101794111 Then `sigma^2` is equal to-

Let `sigma^2` is variance of following frequency distribution
`X_i`
1
2
3
4
5
6
7
8
9
`F_i`
1
0
1
7
9
4
1
1
1
Then `sigma^2` is equal to-