Difference between revisions of "SigmaXX Command"

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{{command|statistics}}
 
{{command|statistics}}
 
; SigmaXX[List of Numbers]: Calculates the sum of squares of the given numbers.
 
; SigmaXX[List of Numbers]: Calculates the sum of squares of the given numbers.
:{{Example| In order to work out the variance of a list you may use <tt>SigmaXX[list]/Length[list] - Mean[list]^2</tt>.}}
+
:{{Example| In order to work out the variance of a list you may use <code>SigmaXX[list]/Length[list] - Mean[list]^2</code>.}}
 
; SigmaXX[List of Points]: Calculates the sum of squares of the ''x''-coordinates of the given points.
 
; SigmaXX[List of Points]: Calculates the sum of squares of the ''x''-coordinates of the given points.

Revision as of 11:57, 24 February 2011


SigmaXX[List of Numbers]
Calculates the sum of squares of the given numbers.
Example: In order to work out the variance of a list you may use SigmaXX[list]/Length[list] - Mean[list]^2.
SigmaXX[List of Points]
Calculates the sum of squares of the x-coordinates of the given points.
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