> On 12 Mar 2004 at 13:40, Veera wrote:
> > Hi,
> > Does anyone know if there is a accurate analytic approximation to the
> > Standard Normal CDF. I am looking to evaluate an expression
> > analytically and need an approximation of the CDF (or possible the
> > error function).
What do you mean by "analytic"? In the usual mathematical sense [having
a well-defined Taylor series that converges to the function], the normal
PDF e^-(x^2) is analytic, and so, therefore, is its integral.
Do you mean a rational approximation? One in terms of elementary
functions? This will affect the answer!
-Robert Dawson
.
.
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