Difference between revisions of "Variance Command"

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<noinclude>{{Manual Page|version=4.0}}[[Category:Manual (official)|{{PAGENAME}}]]</noinclude>
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<noinclude>{{Manual Page|version=5.0}}</noinclude>{{command|cas=true|statistics}}
{{command|statistics}}
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;Variance( &lt;List of Raw Data> )
; Variance[List of Numbers]: Calculates the variance of list elements.
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:Calculates the variance of list elements.
{{example|1=<code>Variance[{1,2,3}]</code> yields ''0.67''.}}
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:{{example|1=<code><nowiki>Variance({1, 2, 3})</nowiki></code> yields ''0.67''.}}
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;Variance( &lt;List of Numbers>, &lt;List of Frequencies> )
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:Calculates the variance of list elements, considering the frequencies.
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:{{example|1=<code><nowiki>Variance({1, 2, 3} , {1, 2, 1})</nowiki></code> yields ''0.5''.}}
 
==CAS Syntax==
 
==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.
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;Variance( &lt;List of Numbers> )
{{example|1=<code>Variance[{1,2,a}]</code> yields'' <math>\frac{2(a²-3a+3)}{9}</math>''.}}
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:Calculates the variance of list elements. If the list contains undefined variables, it yields a formula for the variance.
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:{{example|1=<code><nowiki>Variance({1, 2, a})</nowiki></code> yields ''<math>\frac{2}{9} a^{2} - \frac{2}{3} a + \frac{2}{3}</math>''.
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}}

Latest revision as of 09:27, 12 October 2017


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}.
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