Bookmark and Share

Notice: On April 23, 2014, Statalist moved from an email list to a forum, based at

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

st: Different ways of finding the mean of survey data

From   <>
To   <>
Subject   st: Different ways of finding the mean of survey data
Date   Mon, 2 Dec 2013 12:08:42 +0000

Hi Stata users,

I am working with survey data and at this stage I just would like to produce mean and median stats.

I have noticed a difference in means for variable x when using either of the following command sequences:

svyset id [pweight=pweight], strata(strata)

followed by (1) or (2):

(1) mean x [pweight=pweight]
(2) svy: mean x

I initially used (2) but then I found the following advice for computing the median in the FAQs:

_pctile x [pweight=pweight], p(50)

gen median_x=r(r1)

This led me to try (1) to verify that I get the same result for the mean as in (2) - and I do not. Then: if "svy: median x" existed, it would give a different result. Why would this be a valid method for computing the median if (1) is not a valid method for computing the mean?

Any help in clarifying this is very much appreciated!

Please access the attached hyperlink for an important electronic communications disclaimer:

*   For searches and help try:

© Copyright 1996–2018 StataCorp LLC   |   Terms of use   |   Privacy   |   Contact us   |   Site index