SampleVariance Command

SampleVariance( <List of Raw Data> ): Returns the sample variance of given list of numbers.

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.

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.

SampleVariance({a, b, c}) yields \(\frac{1}\{3} a^\{2} - \frac{1}\{3} ab - \frac{1}\{3}ac + \frac{1}\{3} b^\{2} - \frac{1}\{3} bc + \frac{1}\{3} c^\{2}\).