The NORMINV() function returns the inverse of the normal cumulative distribution. The number must be between 0 and 1 (non-inclusive) and STD must be positive.
De funksje NORMINV( x;..; STD) berekkent de ynverze fan in normale kumulative ferdieling. It getal x (in kânsgetal) moat tusken de 0 en 1 lizze (iepen ynterfal) en STD moat postyf wêze.