Sven Schreiber a écrit :
> artur.bala schrieb:
>
>> Hello,
>>
>> I'm working with an unbalanced panel data and want to sub-sample on a
>> dummy variable which has no mising values throughout the full sample. Is
>> it normal that the outcome contain many empty observations?
>>
>>
> Or do yo
artur.bala schrieb:
> Hello,
>
> I'm working with an unbalanced panel data and want to sub-sample on a
> dummy variable which has no mising values throughout the full sample. Is
> it normal that the outcome contain many empty observations?
>
not sure I understand -- do you mean there are missing
