ERF

Description Computes the "error" function.

Syntax ERF( lower_limit [, upper_limit])

Argument Description

lower_limit The lower limit of the values across which you want to evaluate the function. Must be a real number.

upper_limit The optional upper limit of the values across which you want to evaluate the function. Must be a real number. Omitting the upper limit calculates the error function between 0 and the lower limit.

Argument	Description
lower_limit	The lower limit of the values across which you want to evaluate the function. Must be a real number.
upper_limit	The optional upper limit of the values across which you want to evaluate the function. Must be a real number. Omitting the upper limit calculates the error function between 0 and the lower limit.

Remarks Called the "error" function because it follows the standard distribution of "errors" around the mean (the "bell-shaped curve").

This function forms the basis of "normal" distribution functions.

Equation

Examples This function returns 0.995322265:

ERF(2)

This function returns 0.004655645:

ERF(2,3)

See Also ERFC, NORMDIST, NORMSDIST