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Re: st: mean, mode or median for missing values


From   Jet <lsj555@gmail.com>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: mean, mode or median for missing values
Date   Wed, 3 Feb 2010 01:01:01 -0500

thank you very much for the thoughtful reply.

On Wed, Feb 3, 2010 at 12:03 AM, Richard Williams
<Richard.A.Williams.5@nd.edu> wrote:
> At 11:11 PM 2/2/2010, Jet wrote:
>>
>> Hi, all,
>>
>>     My variable is measured by likert scales, and there are a few
>> missing values. I am thinking of using mean, mode or median to
>> substitute the missing values. Which is better given the ordinal
>> nature of the measurement?
>
> The multiple imputation procedures in Stata 11 allow you to impute values
> for ordinal variables.
>
> Consider too what you are going to do with this variable once you have got
> it.  If you are going to use it as the dependent variable in an ologit
> analysis, that rules out using the mean.  If you are going to use it as an
> independent variable, do you plan on treating it as continuous?  If so, you
> wouldn't be the first person in the world to do so and plugging in a mean or
> an imputed regression estimate becomes more reasonable.
>
>
> -------------------------------------------
> Richard Williams, Notre Dame Dept of Sociology
> OFFICE: (574)631-6668, (574)631-6463
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>
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