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# Variance of a Data Set

## The mean of the squares of the deviation of data values

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Basic Students matched to this level have a partial mastery of prerequisite knowledge and skills fundamental for proficient work.
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## Variance of a Data Set

by CK-12 //basic

Covers the variance for a normally distributed random variable.

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• Video

## Variance of Normally Distributed Data Principles

by CK-12 //basic

This video gives more detail about the mathematical principles presented in Variance of Normally Distributed Data.

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• Video

## Variance of Normally Distributed Data Examples

by CK-12 //basic

This video shows how to work step-by-step through one or more of the examples in Variance of Normally Distributed Data.

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• Video

## Standard Deviation

by CK-12 //basic

Examines the statistical concept of standard deviation, which is used to characterize the spread of a distribution. The video also differentiates between sample standard deviations and population standard deviations and introduces the formulas.

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• Real World Application

## Driving Forces

by CK-12 //basic

Use statistics to analyze how car ownership is changing in the United States.

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