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Standard deviation relationship Practice
Recall standard deviation as the square root of variance.
Start practicingStandard deviation relationship
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What you’ll practice
Standard deviation returns spread to the original units by taking the square root of variance. Both measures are nonnegative.
Where this helps
Connecting two measures of spread.
Before you start
Use this topic to practice math you have already learned. The examples show the available kinds of recall tasks; this is not a complete textbook chapter. Check the answer form and any stated conditions.
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Example 1 of 1
Population variance sigma squared is nonnegative and sigma denotes its principal nonnegative square root.
Choose the exact expression.
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Start practicingStandard deviation relationship
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