Variance Command

From GeoGebra Manual
Revision as of 20:38, 22 August 2015 by Noel Lambert (talk | contribs)
Jump to: navigation, search


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.
Examples:
  • Variance[{1, 2, a}] yields \frac{2}{9} a^{2} - \frac{2}{3} a + \frac{2}{3}.
  • Variance[{1, 2, a} {20, 3, 1}] yields 0.
© 2024 International GeoGebra Institute