Full_Name: Andy Lynch Version: 1.9.1 OS: Windows Submission from: (NULL) (131.111.86.211)
As I understand it, pbirthday(n,c,k) gives the approximate probability that we see a class with k coicident people in it when n people are sorted into c classes. so the command > pbirthday(4,classes=3,coincident=4) should give the approximate probability that when four people fall into three classes, all four end up in the same class. A probability that is clearly lower than the presently returned value of 1. It seems to me that the line in the function if (n > classes) return(1) is only relevant to the default case of coincident = 2. (Naturally, if there are more people than classes, then at least one class must contain 2 people). ______________________________________________ R-devel@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
