Calculating Statistical from many "Observations Groups" of a single variable

[Wagner_Alvarenga]

Suppose one data set named "a" with only one variable named "var1".

This variable ("var1") has more than 10.000 observations.

I want to calculate the mean, median, stdev,... of this variable, but ranging from obs1 to obs100.

Then, to the same calculation, but using the range obs101 to obs201, and so on...

How would be a simple way to do this?

Is it possible to use "firstobs=" and "obs=" with "DO"?

Thanks in advance!

[art297 · Accepted solution]

Why not just use mod to create a new variable and then use it as either a class or by variable with proc means?  e.g.,

data need;

  set a;

  group=ceil(_n_/100);

run;