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armanet
2011 May 19
2
recursive function
Hi,
I created a function for obtaining the normal cumulative distribution (I
know all this already exists in R, I just wanted to verify my
understanding of it). below is the code I came up with.
cdf<-function(x) {
erf<-function(x) {
# approximation to the error function (erf) of the
# normal cumulative distribution function
# from Winitzki