Question

The co-efficient of variation and standard deviation are 20 and 21 respectively .what is the arithmetic mean of the distribution? ​

Answer 1

$\huge{\tt{Solution}}$

Given:

Coefficient if variation = 20

Standard Deviation=21

Answer:

We know that

$Arithmetic \: Mean= \dfrac{standard\: deviation}{Coefficient\:of\: variation} \times100 \\ \\ \implies =\dfrac{21}{20}\times100 \\ \\ \implies 10.5\times 10 \\ \\ \implies{ \boxed{\boxed{105}}}$

Answer 2

refer attachment for the answers.