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CHIDIST

Definition

Returns the right-tailed probability of the chi-squared distribution. The χ2 distribution is associated with a χ2 test. Use the χ2 test to compare observed and expected values. For example, a genetic experiment might hypothesize that the next generation of plants will exhibit a certain set of colors. By comparing the observed results with the expected ones, you can decide whether your original hypothesis is valid.

Sample Usage


Syntax

CHIDIST(x,deg_freedom)

The CHIDIST function syntax has the following arguments:

  • X     Required. The value at which you want to evaluate the distribution.

  • Deg_freedom     Required. The number of degrees of freedom.

Remarks

  • If either argument is nonnumeric, CHIDIST returns the #VALUE! error value.

  • If x is negative, CHIDIST returns the #NUM! error value.

  • If deg_freedom is not an integer, it is truncated.

  • If deg_freedom < 1 or deg_freedom > 10^10, CHIDIST returns the #NUM! error value.

  • CHIDIST is calculated as CHIDIST = P(X>x), where X is a χ2 random variable.

In order to use the CHIDIST formula, start with your edited Excellentable:

 

 

Then type in the CHIDIST formula in the area you would like to display the outcome:


By adding the values you would like to calculate the CHIDIST formula for, Excellentable will generate the outcome:





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