Variance Command

Variance( <List of Raw Data> ): Calculates the variance of list elements.

Variance({1, 2, 3}) yields 0.67.

Variance( <List of Numbers>, <List of Frequencies> ): Calculates the variance of list elements, considering the frequencies.

Variance({1, 2, 3} , {1, 2, 1}) yields 0.5.

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.

Variance({1, 2, a}) yields \(\frac{2}{9} a^{2} - \frac{2}{3} a + \frac{2}{3}\).