Thank you, Greg. In part, that's what I'm poking around for. I'm wondering if there are any adaptations to clustered situations. I have that paper below since it is the reference in qbirthday(), but haven't found anything that has adapted this further.
> -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of Greg Snow > Sent: Tuesday, November 06, 2007 4:23 PM > To: Doran, Harold; r-help > Subject: Re: [R] Algorithms for coincidences > > A paper that may help you: > > "Methods for Studying Coincidences", Persi Diaconis; > Frederick Mosteller. Journal of the American Statistical > Association, vol 84, no. > 408 (Dec., 1989), 853-861. > > And remember that the birthday problem assumes independence, > but if you have 2 students that studied together > (legitimately) then we would not expect their scores to be > independent. > > Hope this helps, > > -- > Gregory (Greg) L. Snow Ph.D. > Statistical Data Center > Intermountain Healthcare > [EMAIL PROTECTED] > (801) 408-8111 > > > > > -----Original Message----- > > From: [EMAIL PROTECTED] > > [mailto:[EMAIL PROTECTED] On Behalf Of Doran, Harold > > Sent: Tuesday, November 06, 2007 12:10 PM > > To: r-help > > Subject: [R] Algorithms for coincidences > > > > I'm looking at algorithms for determining coincidences. In > educational > > testing, it is interesting to look at cheating via the birthday > > problem where I can assess the probability of n students having the > > same test score in a class of size k. > > > > I was writing my own code for the b-day problem until I ran into the > > qbirthday() function, which has solutions for the overflow > problems I > > kept running into. There is no "see also" part of this man > page which > > would reference me to other functions which may prove > useful for such > > problems. But, that doesn't mean they don't exist. > > > > I am just not familiar enough with this branch of > mathematics to know > > exactly what else I might look for. Does anyone know of any other R > > functions that may be useful for me to look at in thinking > about this > > kind of problem? > > > > Harold > > > > [[alternative HTML version deleted]] > > > > ______________________________________________ > > R-help@r-project.org mailing list > > https://stat.ethz.ch/mailman/listinfo/r-help > > PLEASE do read the posting guide > > http://www.R-project.org/posting-guide.html > > and provide commented, minimal, self-contained, reproducible code. > > > > ______________________________________________ > R-help@r-project.org mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide > http://www.R-project.org/posting-guide.html > and provide commented, minimal, self-contained, reproducible code. > ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
