Hello, Thanks everyone for helping me with the previous queries.
step 1: Here is the orginal data: short sample ProbeID Sample_1_D Sample_1_C Sample_2_D Sample_2_C 1 224588_at 2.425509867 11.34031409 11.46868531 11.75741478 step 2: i calculate the variance of the sample using this R code x<-1:20000 y<-2:141 data.matrix<-data.matrix(data[,y])#create data.matrix variableprobe<-apply(data.matrix[x,],1,var) step 3: however, when i type in variableprobe, it gives me this. 1 21.58257457 step 4: I need the code to output this: ProbeID Variance 1 224588_at 21.58257457 What do i need to do to modify the code to give me better description like the one above? thank. Keizer -- View this message in context: http://www.nabble.com/Variance-Calculation-in-R-tp15790621p15790621.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.