Stata The Stata listserver
[Date Prev][Date Next][Thread Prev][Thread Next][Date index][Thread index]

st: RE: Re: mean and median comparison

From   "Nick Cox" <[email protected]>
To   <[email protected]>
Subject   st: RE: Re: mean and median comparison
Date   Wed, 29 Oct 2003 11:23:01 -0000

Alternatively, consider taking logs. 
It may be that you just have a skewed 
variable better examined on a log scale, 
on which mean and median could well be closer, 
relatively speaking, so that the apparent problem fades away. 

[email protected] 

Roger Newson replied to Carmine Ornaghi

> > I have to compare the mean and the median of a
> >variable for two groups of firms (acquired and
> >acquirer) but this variable is not normally
> >distributed (so that I cannot use ttest).
> >I know the command ksmirnov and median to compare the
> >distribution and the median but they just tell me that
> >they are not equal. When I look at the main statistics
> >(using "summarize, detail" for the two groups), I have
> >that the mean is grater in one group but the median is
> >lower. Any suggestion?
> You might use the program -cendif-, part of the -somersd- 
> package, to 
> calculate confidence intervals for median differences or 
> ratios. The 
> package is distributed with .pdf manuals. In Stata, type 
> -ssc desc somersd- 
> to find out more.

*   For searches and help try:

© Copyright 1996–2024 StataCorp LLC   |   Terms of use   |   Privacy   |   Contact us   |   What's new   |   Site index