
I have a data set(Bill) of with 1 variable (var1), with 100 obs that are in ascending order. I want to sample every 10 observations and save them in 10 different groups such as
 
  Group1 is obs 1-10
  Group 2 is obs-11-20
 
and so on.
 
First step is to subset them into the 10 groups, then calculate the mean of var1 for each of the 10 groups. Any help would be appreciated. Thanks.
 
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sh_skydrive_062008
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