Difference between revisions of "SigmaXX Command"
From GeoGebra Manual
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; 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 <tt>SigmaXX[list]/Length[list] - Mean[list]^2</tt>. | ||
; 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 03:38, 6 November 2010
- 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.