Question: If our regression equation is y= XB + u, where we have T observations and k regressors, what will be the dimension of Busing

If our regression equation is y= XB + u, where we have

If our regression equation is y= XB + u, where we have T observations and k regressors, what will be the dimension of Busing the standard matrix notation O TXk O TX1 O kX1 O kXk

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