> Thing is, for one reason or another, the number of marbles per bag may > systematically vary with age too. However, I am not interested in the > number of marbles per bag, so I would like to group the students into 8 > groups such that each group has the same total number of marbles. (Each > group having a different sized age range, none the less ordered by age).
This sounds very much like a bin-packing problem (http://en.wikipedia.org/wiki/Bin_packing_problem), which is NP-hard. The wikipedia page mentions some heuristics you may want to look into. Hadley ______________________________________________ [email protected] mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
