Question

A random sample of 10 subjects have weights with a standard deviation of kg. What is the variance of their​ weights? be sure to include the appropriate units with the result.

Answer 1

The variance of their​ weights is 128.87270 kg².

It is required to find the variance of their​ weights.

What is standard deviation ?

A standard deviation (or σ) is a measure of how dispersed the data is in relation to the mean. Low standard deviation means data are clustered around the mean, and high standard deviation indicates data are more spread out.

Given:

Let n=sample size=10 subjects

Standard deviation=11.352211.3522 kg

Using this formula

Variance=(Standard deviation)²

By the formula we get,

Variance=(11.352211.3522 kg)²

Variance=128.87270 kg²

Therefore, the variance of their​ weights is 128.87270 kg².

Learn more about standard deviation here:

brainly.com/question/16555520

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