# Standard Deviation of a Data Set

## Percentages and the square root of the variance

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.

## Calculating Standard Deviation

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## Variance of a Data Set

Standard Deviation of a Data Set Interactive
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## Standard Deviation of a Data Set Discussion Questions

A list of student-submitted discussion questions for Standard Deviation 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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