# NORMDIST

NORMDIST(x, mean, standard_dev, cumulative)

Returns the probability of getting less than or equal to a particular value in a normal distribution.

 x The number from the distribution. mean The arithmetic mean of the distribution. standard_dev The standard deviation of the distribution. cumulative A logical value indicating the type of function to use:True = cumulative probability function (less than)False = probability density function (equal to)

 REMARKS
 * NORM.DIST was added in Excel 2010 to replace this function.* The normal distribution is a continuous distribution.* If "x" 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.* If "cumulative" = True, then the area under the curve to the left of "x" is returned. This uses the cumulative distribution function.* If "cumulative" = False, then the height of the curve at "x" is returned. This uses the probability density function.* Example - If "mean" = 0 and "standard_dev" = 1 this function is equivalent to the standard normal distribution.* In Excel 2010 the accuracy of this function was improved - https://support.microsoft.com/en-us/help/827371/description-of-the-normdist-function-in-excel* For the Microsoft documentation refer to support.microsoft.com

 A 1 =NORMDIST(0,0,1,TRUE) = 0.5 2 =NORMDIST(-1,0,1,TRUE) = 0.159 3 =NORMDIST(1,0,1,TRUE) = 0.841 4 =NORMDIST(0,0,1,FALSE) = 0.399 5 =NORMDIST(1,0,1,FALSE) = 0.242 6 =NORMDIST(42,40,1.5,TRUE) = 0.909 7 =NORMDIST(42,40,10,TRUE) = 0.579 8 =NORMDIST(42,40,1.5,) = 0.109 9 =NORMDIST("42",40,1.5,) = 0.109 10 =NORMDIST(42,40,,) = #NUM! 11 =NORMDIST(42,"some text",1.5,) = #VALUE!