On Sep 9, 2011, at 03:51 , Jeff Newmiller wrote: > The diff function would be helpful.
...or not: > sum(ppois(0:1000, lambda=2.345, lower=F)) [1] 2.345 (if this was homework: the hard bit is to figure out _why_ this works.) > annie Zhang <annie.zhang2...@gmail.com> wrote: > > Hi All, > > How can I get the expected value from a discrete cdf? Is there any R > function that can do this? > > Thanks, > Annie -- Peter Dalgaard, Professor, Center for Statistics, Copenhagen Business School Solbjerg Plads 3, 2000 Frederiksberg, Denmark Phone: (+45)38153501 Email: pd....@cbs.dk Priv: pda...@gmail.com "Døden skal tape!" --- Nordahl Grieg ______________________________________________ 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.
