CHISQ.DIST.RT Function

Basic Description

The Excel Chisq.Dist.Rt function calculates the right-tailed probability of the chi-square distribution. The function is new in Excel 2010 and so is not available in earlier versions of Excel. However, the Chisq.Dist.Rt function is simply a renamed version of the Chidist function that is available in earlier versions of Excel.

Syntax: CHISQ.DIST.RT( x, degrees_freedom )

where the function arguments are:

x The value at which you want to evaluate the chi-square distribution (must be ≥ 0)
degrees_freedom
The number of degrees of freedom (must be an integer between 1 and 1010)

(If the supplied value is a decimal, this is truncated to an integer)

 

Chisq.Dist.Rt Function Examples

Chi-Square Right-Tailed Distribution with 1, 2 and 3 Degrees of Freedom

  Right-tailed chi-square dist. with 1, 2 & 3 degrees of freedom

The chart on the right shows the right-tailed chi-square distribution, with 1, 2 and 3 degrees of freedom. The value of any of these distributions, for a specified value of x can be calculated using the Excel Chisq.Dist.Rt function. This is shown in the spreadsheets below:

 Formulas:

Examples of use of the Excel Chisq.Dist.Rt Function

 Results:

Excel Chisq.Dist.Rt Function Results

 

Chisq.Dist.Rt Function Errors

If you get an error from the Excel Chisq.Dist.Rt function this is likely to be one of the following :

#NUM! Occurs if either the supplied value of x is negative or the supplied degrees_freedom argument is <1 or >1010
#VALUE! Occurs if either of the supplied arguments are not recognised as numeric values

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