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.
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 of a Data Set

by CK-12 //basic
Covers the variance for a normally distributed random variable.
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Variance

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Calculating Variance

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Random Variable Variance

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Calculating Variance

by Marion Van Hoose //
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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

Variance of a Data Set Interactive
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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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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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• 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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• 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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• 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

Variance, Standard Deviation, and Coefficient of Variation

by Danielle Pintz //basic
covers variance, standard deviation, and coefficient of variation
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• Study Guide

Types of Distributions

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