Difference between revisions of "SigmaXX Command"
From GeoGebra Manual
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:{{Example|1=In order to work out the variance of a list you may use <code>SigmaXX[list] / Length[list] - Mean[list]^2</code>.}} | :{{Example|1=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. | ||
| − | + | ; SigmaXX[ <List of Numbers>, <List of Frequencies> ] | |
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Revision as of 15:56, 3 January 2013
- 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.
- SigmaXX[ <List of Numbers>, <List of Frequencies> ]
