Question: Consider this multiple-regression equation: y hat () = a+ b 1 x 1 + b 2 x 2 . Which of the following statements about

Consider this multiple-regression equation: y hat () = a+ b1x1 + b2x2. Which of the following statements about it is correct?

  1. The estimated regression coefficient a represents the slope of the line.
  2. The estimated regression coefficient b2 equals the change in estimated Y that is associated with a unit change in X2 and X1.
  3. The estimated regression coefficient by equals the change in estimated Y that is associated with a unit change in X1 and X2.
  4. This equation gives us the estimated value, Y hat, of the dependent variable for any specified pair of values of the independent variables.

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