Difference between revisions of "ChiSquared Command"
From GeoGebra Manual
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;ChiSquared[ <Degrees of Freedom d>, x ] | ;ChiSquared[ <Degrees of Freedom d>, x ] | ||
:Creates probability density function (pdf) of [[w:Chi-square distribution|Chi squared distribution]] with ''d'' degrees of freedom. | :Creates probability density function (pdf) of [[w:Chi-square distribution|Chi squared distribution]] with ''d'' degrees of freedom. | ||
Revision as of 13:47, 10 September 2011
- ChiSquared[ <Degrees of Freedom d>, x ]
- Creates probability density function (pdf) of Chi squared distribution with d degrees of freedom.
- ChiSquared[ <Degrees of Freedom>, x, <Boolean Cumulative> ]
- If Cumulative is true, creates cumulative distribution function of Chi squared distribution, otherwise creates pdf of Chi squared distribution.
- ChiSquared[ <Degrees of Freedom d>, <Variable Value v> ]
- Calculates the value of cumulative distribution function of Chi squared distribution at v, i.e. the probability P(X≤v) where X is a random variable with Chi squared distribution with d degrees of freedom.
- Note: Returns the probability for a given x-coordinate's value (or area under the Chi squared distribution curve to the left of the given x-coordinate).
CAS Syntax
In CAS View only following syntax is supported:
- ChiSquared[ <Degrees of Freedom d>, <Variable Value v> ]
- Calculates the value of cumulative distribution function (cdf) of Chi squared distribution at v, i.e. the probability P(X≤v) where X is a random variable with Chi squared distribution with d degrees of freedom.
- Example:
ChiSquared[4, 3]yields \gamma(2, \frac{3}{2}), which is approximately 0.44.
