# NORMINV

NORMINV(probability, mean, standard_dev)

Returns the inverse of the probability distribution function for a normal distribution.

 probability The probability associated with the distribution. mean The arithmetic mean of the distribution. standard_dev The standard deviation of the distribution.

 REMARKS
 * NORM.INV was added in Excel 2010 to replace this function.* The normal distribution is a [[continuous distribution]]* If "probability" < 0, then #NUM! is returned.* If "probability" > 1, then #NUM! is returned.* If "probability" is not numeric, then #VALUE! is returned.* If "mean" is not numeric, then #VALUE! is returned.* If "standard_dev" = 0, then #NUM! is returned.* If "standard_dev" is not numeric, then #VALUE! is returned.* This function uses an iterative technique for calculating the function.* Given a "probability" value, this function iterates until the result is accurate to within (plus or minust) 3x10^-7.* If this function does not converge after 100 iterations, then #N/A is returned.* You can use the NORM.DIST function to* You can use the NORM.S.DIST function to* You can use the NORM.S.INV function to* For the Microsoft documentation refer to support.microsoft.com* For the Google documentation refer to support.google.com

 A 1 =NORMINV(99%, 0, 1) = 2.326 2 =NORMINV(50%, 0, 1) = 0.0 3 =NORMINV(25%, 0, 1) = -0.674 4 =NORMINV(5%, 0, 1) = -1.645 5 =NORMINV(0.908789, 40, 1.5) = 42 6 =NORMINV(0.87, 0, 1) = 1.126 7 =NORMINV(NORMDIST(0.87, 0, 1, TRUE), 0, 1) = 0.87 8 =NORMINV(100%, 0, 1) = #NUM! 9 =NORMINV(1, 0, 1) = #NUM! 10 =NORMINV(-1, 40, 1.5) = #NUM! 11 =NORMINV(2, 40, 1.5) = #NUM! 12 =NORMINV(0.908789, "some text", 1.5) = #VALUE!