Bookmark and Share

Notice: On March 31, it was announced that Statalist is moving from an email list to a forum. The old list will shut down at the end of May, and its replacement, statalist.org is already up and running.


[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: st: replacing with mean


From   "Michael N. Mitchell" <Michael.Norman.Mitchell@gmail.com>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: replacing with mean
Date   Wed, 01 Dec 2010 22:36:23 -0800

Dear Fabio

  Will this do the trick?

egen missrev = mean(revenues), by(industry)
replace revenues = missrev if missing(revenues)

Best regards,

Michael N. Mitchell
Data Management Using Stata      - http://www.stata.com/bookstore/dmus.html
A Visual Guide to Stata Graphics - http://www.stata.com/bookstore/vgsg.html
Stata tidbit of the week         - http://www.MichaelNormanMitchell.com



On 2010-12-01 10.31 PM, Fabio Zona wrote:
Hi,

I have a set of industries, with a different number of firms in each industry; per each firm I have a value, say it be Revenues

Industry         Firm         Revenues
A                  1            100
A                  2            150
A                  3          missing1
A                  4            120
B                  5             80
B                  6            130
B                  7          missing2
..

I need to replace the missing value of Revenues with the mean of the Revenues within the same industries (For example, missing1 for firm 3, needs to be replaced with the mean of the values 100, 150, 120, that is, with the mean of the revenues of other firms 1, 2 and 4 which belong to the same industry to which firm 3 belongs).
I need to do this hundreds of time.
How can I do it easily?
*
*   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/
*
*   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/


© Copyright 1996–2014 StataCorp LP   |   Terms of use   |   Privacy   |   Contact us   |   Site index