Hi,
This is Madhu and I have a following doubt please give a solution...
**>i have the following data frame
from this i want to select a 80% of data randomly in such a way that
if the selected records are 1 and then we have to get the all records
corresponding to 1
similarly for 2 also and soon......... help me
data<-data.frame(x=c(1,1,2,2,2,3,4,4,4),y=c(23,45,87,46,78,12,87,79));**
Regards,
Madhu.
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