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# Variance of a Data Set

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

Levels are CK-12's student achievement levels.
Basic Students matched to this level have a partial mastery of prerequisite knowledge and skills fundamental for proficient work.
At Grade (Proficient) Students matched to this level have demonstrated competency over challenging subject matter, including subject matter knowledge, application of such knowledge to real-world situations, and analytical skills appropriate to subject matter.
Advanced Students matched to this level are ready for material that requires superior performance and mastery.

## Variance

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## Calculating Variance

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## Random Variable Variance

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• PLIX

## Variance of a Data Set

Variance of a Data Set Interactive
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• PLIX

## Variance of a Data Set

Variance of a Data Set Interactive
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## Variance of a Data Set Quiz

10 questions about Variance of a Data Set.
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• Critical Thinking

## Variance of a Data Set Discussion Questions

A list of student-submitted discussion questions for Variance of a Data Set.
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• Real World Application

## Variance of a Data Set

Students will analyze professional athletes' salaries using variance and standard deviation.
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• Real World Application

## Feeling Bubbly

Learn why some colleges have stopped awarding money to National merit Finalists.
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• Study Guide

## Describing Data

This study guide looks at levels of measurement and the shape, measures of center (median, mean, mode), and measures of spread (standard deviation) of a data set. It also compares the measures for population vs the measures for sample.
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• Study Guide

## Types of Distributions

covers normal, binomial, multinomial, geometric, poisson, and student's t distributions
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• Flashcards

## Normal Distribution Curves Flashcards

These flashcards help you study important terms and vocabulary from Spread of a Normal Distribution, Variance of Normally Distributed Data, and Empirical Rule.
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