NormDist

Statistical functions 
SYNTAX  NormDist( x, mean = 0, sigma = 1, cumulative = True ) 
RETURNS  NUMBER 
FUNCTION  The function calculates Normal distribution The function uses hiprecision algorithm that gives accurate results even for extreme left and right tails (<5 and >+5) The results are compatible with Excel 2003 and later which introduced higher precision NORMDIST than previous versions (Excel 2002 and earlier).

EXAMPLE  x = 19; 
SEE ALSO 
The NormDist function is used in the following formulas in AFL online library:
See updated/extended version online.