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Re: st: Summarize data


From   Nick Cox <njcoxstata@gmail.com>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: Summarize data
Date   Sat, 9 Jun 2012 14:09:50 +0100

If I understand what you want correctly, the key is that the mean of
the row means is the table mean.

So,

summarize row_mean

On Stata not STATA, see
http://www.stata.com/support/faqs/res/statalist.html#spell

Nick

On Sat, Jun 9, 2012 at 1:43 PM, Patricia Biedermann <pati.stat@gmail.com> wrote:

> Oh! I got the mistake! Sorry for that! But still one question remains!
> So far I have the mean of the rows...
>
>> egen row_mean = rowmean(Q1A Q2A Q3)
>> list Q1A Q2A Q3A row_mean
>
> Is there a possibility to receive ONE MEAN of several columns(=variables) ?
>
> Thank you
>
> On Sat, Jun 9, 2012 at 1:23 PM, Patricia Biedermann <pati.stat@gmail.com> wrote:
>> Hello!
>> Thank you for your answer!
>>
>> I tried this command:
>>
>> egen row_mean = rowmean(Q1A Q2A Q3)
>> list Q1A Q2A Q3A
>>
>> but I just get a table and I need actual values.  and how do I sort it
>> by groups? (if group==1 ????)
>>
>> Sorry, I'm still quite new to STATA but I'm glad for any help!
>>
>> Thank you.
>>
>> On Fri, Jun 8, 2012 at 8:30 PM, Nick Cox <njcoxstata@gmail.com> wrote:
>>> -egen- offers a bundle of functions (in its own sense) for summarising
>>> rowwise. You can apply -if- and/or -in-.
>>>
>>> Nick
>>>
>>> On Fri, Jun 8, 2012 at 5:46 PM, Patricia Biedermann <pati.stat@gmail.com> wrote:
>>>
>>>> I need to summarize data in the following way:
>>>>
>>>> My questionnaire looks like that:
>>>>
>>>> Question 1     option1           option2           option3 (options
>>>> are numeric 1-5)
>>>>
>>>> Question 2
>>>>
>>>> Question 3
>>>>
>>>> Etc. (up to 16 question in  the same structure)
>>>>
>>>> The database in Stata looks like that:
>>>>
>>>> ID        Q1A     Q1B     Q1C     Q2A     Q2B     Q3B     …ETC  (GROUP)
>>>>
>>>> Respectively option1 of question 1 represents Q1A
>>>
>>>> Now I want to summarize the data of all questionnaires in that way:
>>>>
>>>> -       summarize (mean) option 1 for ALL QUESTIONS AND ALL
>>>> questionnaires (mean of Q1A, Q2A, Q3A,...etc)
>>>>
>>>> -       summarize (mean) option 2 etc…(mean of Q1B, Q2B, Q3B,...etc)
>>>>
>>>> So, maybe the solution is simpler then I think or my database is
>>>> crap…but can anyone help me to figure out the right commands? (I
>>>> already tried sum and collapse commands...)
>>>>
>>>>  Is there also a possibility to summarize it by grouping (same
>>>> questionnaires, but e.g. different location of interview…)

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