Question: Consider the regression y = ???????? + X???? + u where ???? is the column of ones and X contains other regressors. (a) If the

Consider the regression y = ???????? + X???? + u where ???? is the column of ones and X contains other regressors.

(a) If the columns of X are in mean deviation form, what is the least squares estimator of ?????

(b) If the columns of X are not in mean deviation form, how does this modify the answer to part (a)?

(c) If ???? is one of the columns of X, how does this modify the answer to part (b)?

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