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Re: st: Computing a cumulative frequency variable


From   Robert A Yaffee <bob.yaffee@nyu.edu>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: Computing a cumulative frequency variable
Date   Thu, 11 May 2006 13:57:39 -0400

Raphael,
  Try
gen cumfreq=sum(etime)
  - RY

Robert A. Yaffee, Ph.D.
Research Professor
Shirley M. Ehrenkranz
School of Social Work
New York University

home address:
Apt 19-W
2100 Linwood Ave.
Fort Lee, NJ
07024-3171
Phone: 201-242-3824
Fax: 201-242-3825
yaffee@nyu.edu

----- Original Message -----
From: Raphael Fraser <raphael.fraser@gmail.com>
Date: Thursday, May 11, 2006 1:31 pm
Subject: st: Computing a cumulative frequency variable

> 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
> 
> Raphael
> 
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