Notice: On April 23, 2014, Statalist moved from an email list to a forum, based at statalist.org.
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
st: Ommit missing observations from sum, det?
From
Benedikt Achatz <[email protected]>
To
[email protected]
Subject
st: Ommit missing observations from sum, det?
Date
Mon, 9 Jul 2012 17:27:35 +0200
I am trying to seperate my data into quartiles, doing it with this code:
sum initial_length, det
gen initial_length_q=1 if initial_length <=r(p25)
replace initial_length_q=2 if initial_length >r(p25) & initial_length <= r(p50)
replace initial_length_q=3 if initial_length >r(p50) & initial_length <= r(p75)
replace initial_length_q=4 if initial_length >r(p75) & initial_length <= r(p99)
replace initial_length_q=5 if initial_length >r(p99)
The problem that reveals itself to me is that if there are missing
observations, those get put in the 99% quartile. Is there any specific
reason behind it, and does anyone know how I could work around that?
*
* For searches and help try:
* http://www.stata.com/help.cgi?search
* http://www.stata.com/support/statalist/faq
* http://www.ats.ucla.edu/stat/stata/