SampleVariance Command

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

SampleVariance({1, 2, 3, 4, 5}, {3, 2, 4, 4, 1}) yields a = 1.67.

If the list in the CAS View contains undefined variables, this command yields a formula for the sample variance.

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