I think I have a question relationated with this
I have a panel dataset of 24 countries with observations that go from 1960
from 2000
I need a panel only with mean values in periods of 5 years. So for each
variable I have to consider a group of 5 years and take its mean value.
The years variable should be reduced to eight periods
How can I do it?
Thanks a lot
Ines
> duplicates drop id, force
>
> will leave you with panels with one observation
> each. At least that is my understanding of
> -duplicates-.
>
> I don't find this well specified. If you
> want a random subset of observations, you need
> to do nothing special. If you want a random
> subset of panels, you need to say more about
> what kind of random subset.
>
> Nick
> [email protected]
>
> chen jie
>
>> I have a problem on how to select observations from a
>> unbalanced panel data?
>>
>> I mean, the original data is too big and I want only a
>> smaller section. If it is a balanced panel data, I can
>> for example choose 50% random part. But now it is a
>> unbalance panel data, I can't do that otherwise the
>> new data will suffer from "length bias". I think
>> first I need to randomly choose 50% of individuals
>> (duplicates drop id, force==>sample 50), but how I can
>> proceed next by using this unique id key index to
>> produce new panel data?
>
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