# CHIDIST

Formulas / CHIDIST
Calculate the one-tailed probability of the chi-squared distribution for a given Î³2 test.
`CHIDIST(x,degrees_freedom)`
• x - the value at which to evaluate the distribution
• deg_freedom - [OPTIONAL] the degrees of freedom

## Examples

• `=CHIDIST(A2,A3)`

For example, if we have data points A2 and A3, and we want to know the one-tailed probability of the chi-squared distribution for those two points, we can use the Sourcetable function. This will return the one-tailed probability of the chi-squared distribution for those two points.

## Summary

The CHIDIST function is used to calculate the one-tailed probability of the chi-squared distribution for a Î³2 test. Note that the function does not work if degrees_freedom is less than 1 or is 10^10.

• The CHIDIST function calculates the probability of the chi-squared distribution and is used for a Î³2 test.
• The CHIDIST function returns the #VALUE! error value if either argument is not a number.
• The CHIDIST function truncates degrees_freedom if degrees_freedom is not an integer.

What is the CHIDIST function?
The CHIDIST function calculates the one-tailed probability of the chi-squared distribution.
What is the chi-squared distribution used for?
The chi-squared distribution is used in a Î³2 test, which compares observed and expected values.
What errors are thrown by the CHIDIST function?
• The #VALUE! error is thrown if either argument is not numerical.
• The #NUM! error is thrown if x is negative.
• The degrees_freedom argument is truncated if it is not an integer.