Question

If the mean of frequency distribution is 100 and coefficient of variation is 45% then standard deviation is.
(a) 45
(b) 0.45
(c) 4.5
(d) 450

Answer 1

option a is your answer.
I hope this answer will help you

Answer 2

Answer:

This is a simple question of statistics.

Mean is the sum of the sample values divided by the number of samples.

Standard variation expresses by how much the value of a number differs from the mean value.

Here, direct formula is used.

Coefficient of variation = 45/100 = 0.45

Coefficient of variation = Standard variation/ Mean

or, 0.45 = Standard variation / 100

or, standard variation = 100 * 0.45 = 45

So, the standard variation is 45.

So, the answer is option (a) 45.