Karen One more question. Do you have a good function for the inverse of the standard normal cumulative distribution?
Regards Paul On 3/10/06, Karen <[EMAIL PROTECTED]> wrote: > > > On Mar 9, 2006, at 11:38 PM, Paul Rehill wrote: > > > Is there a known MBS or realbasic function for the standard normal > > cumulative distribution function? > > Thanks in advance > > Function StdCumNormDist(x as double) As double > Const a1 = 0.31938153 > Const a2 = -0.356563782 > Const a3 = 1.781477937 > Const a4 = -1.821255978 > Const a5 = 1.330274429 > Const pi = 3.1415926535897932384626433832795 > > Dim L , K, w As double > > L = Abs(x) > K = 1.0 / (1.0 + 0.2316419 * L) > w= 1.0 - 1.0 / Sqrt(2.0 * Pi) * Exp(-L * L / 2.0) * (a1 * K + a2 * > K*K + a3 * Pow(K, 3) + a4 * Pow(K , 4) + a5 * Pow(K, 5)) > > If x < 0.0 Then w= 1.0 - w > > return w > End Function > _______________________________________________ Unsubscribe or switch delivery mode: <http://www.realsoftware.com/support/listmanager/> Search the archives of this list here: <http://support.realsoftware.com/listarchives/lists.html>
