Three people suggested variations on -sum()-,
which is naturally correct.
This is to add that the -cumul- command
can do this, as it can also take weights
and be used with -by:-.
What's more,
. search cumulative
points directly towards -cumul-.
Nick
[email protected]
Raphael Fraser
> I have the following variables and would like to generate or compute
> the cumulative frequency of etime. The end result should look like
> this:
>
> id etime cum. freq
> 15 0 0
> 15 6 6
> 15 2 8
> 20 10 10
> 20 30 40
> 20 4 44
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