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Minumum Observations for Panel data estimation

Posted: Thu Jan 22, 2015 3:37 am
by learner
Dear All

I am estimating fixed effect model, following is the sample size

Number of firms 5
Number of years 9
so total observations 45

Question is: what is the minimum number of observation required to estimate panel data models so that coefficients are reliable.

Thanking you in advance.

Learner