This is R-help, not R-do-my-work-for-me. It is also not a homework help line. The Posting Guide is required reading. Assuming this is not homework, since each step in your problem definition can be mapped to a fairly basic operation in R (the sample function and indexing being key tools), you should be showing your work with a reproducible example that illustrates where you are stuck or why the result you are getting does not exhibit the desired properties.
On December 15, 2020 6:48:12 PM PST, Chao Liu <psychao...@gmail.com> wrote: >Dear R experts, > >I want to simulate some unbalanced clustered data. The number of >clusters >is 20 and the average number of observations is 30. However, I would >like >to create an unbalanced clustered data per cluster where there are 10% >more >observations than specified (i.e., 33 rather than 30). I then want to >randomly exclude an appropriate number of observations (i.e., 60) to >arrive >at the specified average number of observations per cluster (i.e., 30). >The >probability of excluding an observation within each cluster was not >uniform >(i.e., some clusters had no cases removed and others had more >excluded). >Therefore in the end I still have 600 observations in total. How to >realize >that in R? Thank you for your help! > >Best, > >Liu > > [[alternative HTML version deleted]] > >______________________________________________ >R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see >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. -- Sent from my phone. Please excuse my brevity. ______________________________________________ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see 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.
