CHISQDIST


Calculates values for a .

Syntax

CHISQDIST(x, k, Cumulative)

x is the number, at which you will evaluate the .
k sets the degrees of freedom for the
Constraint: k must be a positive integer
Cumulative is a logical value.
In the case Cumulative=TRUE() the cumulative distribution function is used, in the case Cumulative=FALSE() the probability density function. This parameter is optional. It is set to TRUE() if missing.

Semantic

CHISQDIST(x,k,FALSE()) returns values of the probability density function for the :




CHISQDIST(x,k,TRUE()) returns the left tail probability for the :



Example



CHISQDIST(2.3,15,FALSE())returns approximately 0,000209862

chi1.png



CHISQDIST(1.5,2,TRUE())returns approximately 0,5276334

chi2.png



CHISQDIST(18,15,TRUE())returns approximately 0,73733444

chi3.png


chi4.png


Remarks

If you need CHISQDIST(x,k,TRUE()) with a non integer parameter k, then use GAMMADIST(x,k/2,2) instead.










 
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