Excel Functions

Error function and error function complement in Excel 2003

Erf(x) = GammaDist(x^2,0.5,1,TRUE) (if x > 0)

= -GammaDist(x^2,0.5,1,TRUE) (if x < 0)

ErfC(x) = ChiDist(2*x^2,1) = 2*NormSDist(-x*Sqrt(2))