UGC NET Statistics Q18

Question

For four different population, the number of positive x, values in the population (n), the sum of x, values (Σx) and sum of squares of x, values (Σx²) are given as A-D below. Compute the standard deviation of each population and arrange in ascending order.
A. n = 10, Σx = 450, Σx² = 24250
B. n = 8, Σx = 104, Σx² = 1424
C. n = 5, Σx = 120, Σx² = 3600
D. n = 7, Σx = 28, Σx² = 140
Choose the correct answer from the options given below:

Accepted Answer

B, D, A, C