If the mean and variance of variates are and respectively and five of them are then the product of the remaining two varieties is:
Explanation for the correct answer:
Step 1: Consider the mean of the variates
The given five variates are .
Let us assume that the remaining two variates are and .
The mean of the variates are .
Step 2: Consider the variance of the variates, and calculating the product
The variance of variates can be given by, .
It is given that, the variance of the variates, .
Therefore, the product of the remaining two varieties is .
Hence, option B is the correct answer.