I.e. for a supplied probability, the Chisq.Inv.Rt function finds the value of x such that:
The Excel Chisq.Inv.Rt function calculates the inverse of 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.Inv.Rt function is simply an updated version of the Chiinv function, which is available in earlier versions of Excel.
The syntax of the Chisq.Inv.Rt function is:
Where the function arguments are:
|probability||-||The probability of the right-tailed chi-square distribution, for which you want to find the value of x.|
|degrees_freedom||-||degrees_freedom is a decimal, this is truncated to an integer).(If the supplied|
The spreadsheet below shows five examples of the Excel Chisq.Inv.Rt function, used to calculate the inverse of the right-tailed chi-square distribution for different probability values, and different degrees of freedom.
For further examples of the Excel Chisq.Inv.Rt function, see the Microsoft Office website.
If you get an error from the Excel Chisq.Inv.Rt function this is likely to be one of the following:
|#VALUE!||-||Occurs if any of the supplied arguments is non-numeric.|