UGC NET Statistics Q33

Question

Population standard deviation (σ) and $\frac{1}{N}\sum x^2_i$ (x > 0) of different datasets are given in A-D below. Compute the population mean of each dataset and arrange in descending order.
A. σ = 5, $\frac{1}{N}\sum x^2_i$ = 61
B. σ = 7, $\frac{1}{N}\sum x^2_i$ = 113
C. σ = 8, $\frac{1}{N}\sum x^2_i$ = 145
D. σ = 6, $\frac{1}{N}\sum x^2_i$ = 85
Choose the correct answer from the options given below:

Accepted Answer

A, B, D, C