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    Averaging regression coefficients for 50 regression , how to report t statistic ??

    hi i have estimated same regression equation for 50 stocks, i need to report the cross sectional average of the regression coefficients, how can i report the t statistic for the cross sectional averages. Shoulc i average them too?? help needed
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    Panel data graphs in STATA using by command

    Hi i am trying to make graphs using stata of panel data, with alot of stocks. The by variable i have to use is stock name, so that i get a two way line plot of a stock price and date for every stock in the panel data. The problem is when i use stock as the by variable, stata produces 400...