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Re: st: Panel data correlation
From
Anderson Macedo de Jesus <[email protected]>
To
[email protected]
Subject
Re: st: Panel data correlation
Date
Tue, 01 Apr 2014 20:06:51 +0200
Thanks a lot, Elan
Very helpful.
Thats why I asked.
I will check and let you know about the results
Anderson
On Apr 1, 2014, at 8:02 PM, Cohen, Elan <[email protected]> wrote:
> This is my guess. Anderson would like to look at the correlation across years, but -correlate- isn't structured to handle data in long format. Hence, we need to -reshape wide-.
>
> reshape wide CA PFI, i(country) j(years)
> corr CA*
> corr PFI*
>
> The above code has not been tested. Hope this helps.
>
> - Elan
>
>
> -----Original Message-----
> From: [email protected] [mailto:[email protected]] On Behalf Of Nick Cox
> Sent: Tuesday, April 01, 2014 13:50
> To: [email protected]
> Subject: Re: st: Panel data correlation
>
> Sorry, but I can't add to my previous answer as I don't think you are
> posing a precise question.
>
> What's different may be what makes sense to your project, but pooling
> countries and years just mixes different kinds of variation and would
> produce something difficult to interpret. The point is usually made in
> broader discussions of cross-sectional and panel analyses.
> Nick
> [email protected]
>
>
> On 1 April 2014 18:43, Anderson Macedo de Jesus <[email protected]> wrote:
>> Nick,
>> I have two variables and I need to check the correlation between them in a panel data, but I have a panel data for 135 countries described as follows:
>>
>> countries years CA PFI
>> Brazil 1990 12 20
>> Brazil 1995 10 5
>> Brazil 2000 40 1
>> Brazil 2005 4 40
>> Brazil 2010 20 30
>> Netherlands 1990 100 30
>> ...
>>
>> I have been dealing with these data for a while and I could notice that it is a bit different to deal with panel data. So, I would like to know whether or not I can use the simple -correlate- command or there is something different. Thats my question. I don't want to make a big mistake
>> Thanks
>> Anderson
>>
>>
>> On Apr 1, 2014, at 7:31 PM, Nick Cox <[email protected]> wrote:
>>
>>> The Pearson correlation between two variables can be calculated with
>>> -correlate-. You could restrict that to different years or even
>>> different countries, although I wouldn't pay anything for correlations
>>> based on 5 values. So, what's the precise question?
>>>
>>> Nick
>>> [email protected]
>>>
>>>
>>> On 1 April 2014 18:25, Anderson Macedo de Jesus <[email protected]> wrote:
>>>
>>>> I need to check the correlation btw two variables in a panel data in a long format (135 countries with 5 different years for each variable). How can I do that?
>>>> As I could realize it is not possible to run the pearson correlation, right? So, I could I do that?
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>>
>>
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