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Thanks a mill! :D

Can you help me to calculate the sum of values and stdev by the cross-section in a panel data setting, please?
The ID is the cross-section ID, the rest are the variables. Thank you.

I need to use the residuals from the following regression (weekly stock return is the dependent variable and weekly market return, its leads and lags are the explanatory variables): r_(i,t)=α_i+β_(1,i) r_(m,t-2)+β_(2,i) r_(m,t-1)+β_(3,i) r_(m,t)+β_(4,i) r_(m,t+1)+β_(5,i) r_(m,t+2)+ε_(i,t). I have un...

I think I can manage to do this, thanks again,
valia

Sorry for bothering you again.
I need dummy if chair and CEO is the same person. Could you help me with this, please?

thanks again,
Valia

Thanks for the promt response, Gareth.
I'll try.
Valia

Dummy again... this time the task becomes more complicated because it is necessary to construct a dummy based on the text strings that has to be considered carefully. There is an information about job titles for more than 8000 person. We need to identify person who holds CEO/chairman position. There...