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# Re: st: Summarize data

 From Patricia Biedermann <[email protected]> To [email protected] Subject Re: st: Summarize data Date Sat, 9 Jun 2012 15:44:25 +0200

```PERFECT! Thank you!

On Sat, Jun 9, 2012 at 3:09 PM, Nick Cox <[email protected]> wrote:
> 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 <[email protected]> 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 <[email protected]> wrote:
>>> Hello!
>>>
>>> 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 <[email protected]> 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 <[email protected]> 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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```