The Excel Chisq.Inv function calculates the inverse of the left-tailed probability of the Chi-Square Distribution.
The function is new in Excel 2010 and so is not available in earlier versions of Excel.
The syntax of the function is:
Where the function arguments are:
|probability||-||The probability of the left-tailed chi-square distribution, for which you want to find the value of x.|
|degrees_freedom||-||(If the supplied value is a decimal, this is truncated to an integer).|
The Excel Chisq.Inv function is used in the spreadsheet below, to calculate the inverse of the left-tailed chi-square distribution for five sets of values.
For further details and examples of the Excel Chisq.Inv function, see the Microsoft Office website.
If you get an error from the Excel Chisq.Inv function this is likely to be one of the following:
|#VALUE!||-||Occurs if any of the supplied arguments is non-numeric.|