CHISQ.DIST.RT function

The CHISQ.DIST.RT function in Excel returns the right-tailed probability of the chi-squared distribution. This is useful when you’re performing hypothesis tests, such as the chi-squared test for goodness of fit or tests of independence, where you want to calculate the probability of observing a value greater than or equal to a given test statistic.

Syntax:

CHISQ.DIST.RT(x, deg_freedom)

Arguments:

• x: The value at which you want to evaluate the chi-squared distribution (a positive number). This is the test statistic or the value for which you’re finding the right-tailed probability.
• deg_freedom: The number of degrees of freedom for the chi-squared distribution (positive integer).

Example:

If you want to calculate the right-tailed probability for a chi-squared statistic of 5 with 10 degrees of freedom, you would use:

=CHISQ.DIST.RT(5, 10)

This will return the probability that the chi-squared random variable is greater than or equal to 5 for a distribution with 10 degrees of freedom. This is often used in statistical hypothesis testing to assess the significance of a result.