Difference between revisions of "Variance Command"
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<noinclude>{{Manual Page|version=5.0}}</noinclude>{{command|cas=true|statistics}} | <noinclude>{{Manual Page|version=5.0}}</noinclude>{{command|cas=true|statistics}} | ||
| − | ;Variance[ | + | ;Variance[ <List of Raw Data> ] |
:Calculates the variance of list elements. | :Calculates the variance of list elements. | ||
:{{example|1=<div><code><nowiki>Variance[{1, 2, 3}]</nowiki></code> yields ''0.67''.</div>}} | :{{example|1=<div><code><nowiki>Variance[{1, 2, 3}]</nowiki></code> yields ''0.67''.</div>}} | ||
| − | ;Variance[ | + | ;Variance[ <List of Numbers>, <List of Frequencies> ] |
:Calculates the variance of list elements, considering the frequencies. | :Calculates the variance of list elements, considering the frequencies. | ||
:{{example|1=<div><code><nowiki>Variance[{1, 2, 3} , {1, 2, 1}]</nowiki></code> yields ''0.5''.</div>}} | :{{example|1=<div><code><nowiki>Variance[{1, 2, 3} , {1, 2, 1}]</nowiki></code> yields ''0.5''.</div>}} | ||
==CAS Syntax== | ==CAS Syntax== | ||
| − | ;Variance[ | + | ;Variance[ <List of Numbers> ] |
:Calculates the variance of list elements. If the list contains undefined variables, it yields a formula for the variance. | :Calculates the variance of list elements. If the list contains undefined variables, it yields a formula for the variance. | ||
:{{examples|1=<br> | :{{examples|1=<br> | ||
Revision as of 21:38, 22 August 2015
- 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.
