Question

A random sample of 10 subjects have weights with a standard deviation of 12.7363 kg. What is the variance of their​ weights?

Answer 1

Answer:

Variance, V = 162.2133 kg²

Step-by-step explanation:

Given the following data;

Standard deviation = 12.7363 kg.

To find the the variance of their weights?

Mathematically, standard deviation is equal to the square root of variance.

$Sd = \sqrt{V}$

Where;

Sd is the standard deviation of the sample.

V is the variance of the sample.

Substituting into the formula, we have;

$12.7363 = \sqrt{V}$

Taking the square of both sides, we have;

$12.7363^{2} = V$

Variance, V = 162.2133 kg²