# Variance Command

From GeoGebra Manual

- Variance( <List of Raw Data> )
- Calculates the variance of list elements.
**Example:**`Variance({1, 2, 3})`

yields*0.67*.

- Variance( <List of Numbers>, <List of Frequencies> )
- Calculates the variance of list elements, considering the frequencies.
**Example:**`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.
**Example:**`Variance({1, 2, a})`

yields*\frac{2}{9} a^{2} - \frac{2}{3} a + \frac{2}{3}*.