CHISQ.INV

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

Sample Usage

CHISQ.INV(0.42, 2)

CHISQ.INV(A2, B2)

Syntax

CHISQ.INV(probability, degrees_freedom)

• probability - The probability associated with the left-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.

See Also

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

CHIINV: Calculates the inverse of the right-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.

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

T.INV: Calculates the negative inverse of the one-tailed TDIST function.

Example

Suppose you want to find the cutoff for the chi-squared statistic associated with a left-tailed probability of 0.95. With 4 degrees of freedom, you can consider any chi-squared statistic larger than 3.36 to be statistically significant.

	A	B	C
1	Probability	Degrees freedom	Solution
2	0.95	4	9.487729037
3	0.95	4	=CHISQ.INV(0.95, 4)
4	0.95	4	=CHISQ.INV(A2, B2)