On Apr 29, 2012, at 2:25 AM, billy am <wickedpu...@gmail.com> wrote:
> Interesting set of question.. I am completely new to R but let me try my > luck. > > Random number in R > > x <- runif(60 , 0 , 10) # 60 numbers from 0 to 10 > y<- runif(60, 15 , 25) # same as above , from 15 to 25 > > The second part though. Do you mean , > > for( i in 1:length(x)) { > z = x[i] + y[i] > return z > } This is both invalid syntax and non-idiomatic: you want a simple z = x+y Michael > > something like that? No idea about the third part though. > > regards > Billy > > On Sun, Apr 29, 2012 at 9:29 AM, Mike Miller <mbmille...@gmail.com> wrote: > >> On Fri, 27 Apr 2012, Vale Fara wrote: >> >> I am working with lotteries and I need to generate two sets of uniform >>> random numbers. >>> >>> Requirements: >>> 1) each set has 60 random numbers >>> >> >> random integers? >> >> >> 2) random numbers in the first set are taken from an interval (0-10), >>> whereas numbers in the second set are taken from a higher interval >>> (15-25) >>> >> >> Depends on if you mean integers. R has functions. Here's one: >> >> http://www.astrostatistics.**psu.edu/su07/R/html/stats/**html/Uniform.html<http://www.astrostatistics.psu.edu/su07/R/html/stats/html/Uniform.html> >> >> >> >> 3) numbers generated in the first set should be matched to numbers in >>> the second set (row by row) so that the expected value of each couple >>> of random numbers (i.e. of each lottery) is around to a given value >>> (12.5 +/- 5, where 12.5 is the median value of the interval extremes). >>> >> >> Do you mean that the mean for the pair of numbers must be between 7.5 and >> 17.5, inclusive? That means the sum must be from 15 to 35. Well, you are >> in luck because if you make the numbers as you suggested above, that will >> happen -- you don't have to do anything special to make it happen. >> >> >> >> For the computation of the expected value, the probabilities in each >>> lottery are � and �. >>> >> >> For what outcome? You lost me. >> >> >> >> How do this? Any help given would be greatly appreciated. >>> >> >> I hope that helps. >> >> Mike >> ______________________________________________ >> 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. >> >> > > > -- > http://use-r.com - R Statistics Scripting & Programming Language Online > Community Home > http://bam.domainpool.com - Domains For Sale > http://SQLHack.net - Tech Blog/Tutorials > > ------------------------------------------------------------------------------------ > > MCSA (Security) , MCSA , CCNA , LPIC - Lvl 1 , Security+ , Network+ , A+ > > [[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.