Question
Mathematics Question on Mean Deviation
| Let μ be the mean and σ be the standard deviation of the distributionxi | 0 | 1 | 2 | 3 | 4 | 5 |
|---|---|---|---|---|---|---|
| fi | k+2 | 2k | k2-1 | k2-1 | k2+1 | k-3 |
| where ∑fi = 62. if [x] denotes the greatest integer ≤ x, then [μ2 + σ2] is equal |
A
6
B
7
C
8
D
9
Answer
8
Explanation
Solution
The correct option is(C): 8