# SampleVariance Command

##### Command Categories (All commands)

SampleVariance( <List of Raw Data> )
Returns the sample variance of given list of numbers.
Example: SampleVariance({1, 2, 3, 4, 5}) yields a = 2.5.

SampleVariance( <List of Numbers>, <List of Frequencies> )
Returns the sample variance of given list of numbers considering the frequencies.
Example: SampleVariance({1, 2, 3, 4, 5}, {3, 2, 4, 4, 1}) yields a = 1.67.

Hint: If the list in the CAS View contains undefined variables, this command yields a formula for the sample variance.
Example: SampleVariance({a, b, c}) yields \mathrm{\mathsf{ \frac{1}{3} a^{2} - \frac{1}{3} ab - \frac{1}{3}ac + \frac{1}{3} b^{2} - \frac{1}{3} bc + \frac{1}{3} c^{2} }}.
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