Re: [R] find the corresponding mean y
Not very clear what you want, but perhaps... ?sortedXyData ...might help. hth KJ luciferyan anniehyh...@googlemail.com wrote in message news:1263231740556-1011427.p...@n4.nabble.com... Hello, I have 49 paired data, x, y. I have sampled x (where replacement is true), and find its mean. How can I find the corresponding mean y, which is the paired data of above sample x? Thank you very much, Annie -- View this message in context: http://n4.nabble.com/find-the-corresponding-mean-y-tp1011427p1011427.html Sent from the R help mailing list archive at Nabble.com. __ 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] find the corresponding mean y
Hello, I have 49 paired data, x, y. I have sampled x (where replacement is true), and find its mean. How can I find the corresponding mean y, which is the paired data of above sample x? Thank you very much, Annie -- View this message in context: http://n4.nabble.com/find-the-corresponding-mean-y-tp1011427p1011427.html Sent from the R help mailing list archive at Nabble.com. __ 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.
Re: [R] find the corresponding mean y
On Jan 11, 2010, at 12:42 PM, luciferyan wrote: Hello, I have 49 paired data, x, y. I have sampled x (where replacement is true), and find its mean. If you show how you did that, then we can show you the next steps. How can I find the corresponding mean y, which is the paired data of above sample x? -- David Winsemius, MD Heritage Laboratories West Hartford, CT __ 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.
Re: [R] find the corresponding mean y
Annie, If I understand what you are asking, you want to sample some number of observations, with replacement, then find the mean of x and y for those observations. In this case, you would want to sample the row indices instead of the values. For example, #test data set.seed(1) df - data.frame(x = rnorm(100), y = rnorm(100)) #sample from row indices samp - sample(nrow(df), 25, replace = TRUE) #get means for x and y mean(df[samp,]$x) mean(df[samp,]$y) #or mean(df[samp,]) Greg On 1/11/10 9:42 AM, luciferyan wrote: Hello, I have 49 paired data, x, y. I have sampled x (where replacement is true), and find its mean. How can I find the corresponding mean y, which is the paired data of above sample x? Thank you very much, Annie -- Greg Hirson ghir...@ucdavis.edu Graduate Student Agricultural and Environmental Chemistry 1106 Robert Mondavi Institute North One Shields Avenue Davis, CA 95616 __ 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.
