Variance Command

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Variance[ <List of Numbers> ]
Calculates the variance of list elements.
Example:
Variance[{1, 2, 3}] yields 0.67.

CAS Syntax

Variance[ <List of Numbers> ]
Calculates the variance of list elements. If the list contains undefined variables, it yields a formula for the variance.
Example:
Variance[{1, 2, a}] yields \frac{2 a^{2} - 6 a + 6}{9}.
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