Question

If the standard deviation of a population is 6.5, what would be the population variance?

• A. 14
• B. 42.25
• C. 7.8
• D. 3.25

Answer 1

Answer:

B. 42.25

Given standard deviation σ = 6.5

We know that variance is the square of the standard deviation

Variance = (standard deviation)$^2$

 $=(σ)^2$

⇒ $(6.25)^2$

⇒ 42.25