CHIINV

Calculates the inverse of the right-tailed chi-squared distribution.

Sample Usage

CHIINV(0.42, 2)

CHIINV(A2, B2)

Syntax

CHIINV(probability, degrees_freedom)

• probability - The probability associated with the right-tailed chi-squared distribution.

  • Must be greater than 0 and less than 1.

• degrees_freedom - The number of degrees of freedom of the distribution.

Notes

• degrees_freedom is truncated to an integer if a non-integer is provided.

• degrees_freedom must be at least 1.

• All arguments must be numeric.

• CHIINV is synonymous with CHISQ.INV.RT.

See Also

CHIDIST: Calculates the right-tailed chi-squared distribution, often used in hypothesis testing.

CHISQ.INV: Calculates the inverse of the left-tailed chi-squared distribution.

CHISQ.INV.RT: Calculates the inverse of the right-tailed chi-squared distribution.

CHITEST: Returns the probability associated with a Pearson’s chi-squared test on the two ranges of data. Determines the likelihood that the observed categorical data is drawn from an expected distribution.

FINV: Calculates the inverse of the right-tailed F probability distribution. Also called the Fisher-Snedecor distribution or Snedecor’s F distribution.

TINV: Calculates the inverse of the two-tailed TDIST function.

Example

Suppose you want to find the cutoff for the chi-squared statistic associated with a p-value of 0.05. With 4 degrees of freedom, you can consider any chi-squared statistic larger than 9.49 to be statistically significant.

	A	B	C
1	Probability	Degrees freedom	Solution
2	0.05	4	9.487729037
3	0.05	4	=CHIINV(0.05, 4)
4	0.05	4	=CHIINV(A2, B2)