If the variance of the ages of the people who attended a rock concert is 38, what is the standard deviation of the ages? Round your answer to two decimal places

Question

asked Feb 1, 2020 119k views

1 Answer

Njol · Answer 1 · 2020-02-05T18:59:54+0000

Answer:

$\sigma=6.16$

Explanation:

By definition, the variance V of a population is defined as:

$V = \sigma^2$

Where
$\sigma$ is the standard deviation

We know that
V = 38 , then we can solve the equation for the standard deviation
$\sigma$

$38 = \sigma^2$

$\sigma^2=38$

$\sigma=√(38)$

$\sigma=6.16$

Finally the standard deviation is:
$\sigma=6.16$