Difference between revisions of "Variance Command"
From GeoGebra Manual
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<noinclude>{{Manual Page|version=4.2}}</noinclude> | <noinclude>{{Manual Page|version=4.2}}</noinclude> | ||
{{command|cas=true|statistics}} | {{command|cas=true|statistics}} | ||
| − | ;Variance[ <List of | + | ;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[ <List of Numbers>, <List of Frequencies> ] | ;Variance[ <List of Numbers>, <List of 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== | ||
Revision as of 13:46, 31 July 2013
- 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 a^{2} - 6 a + 6}{9}.Variance[{1, 2, a} {20, 3, 1}]yields \frac{2 \; a² - 52 \; a + 632}{9}
