38) The least squares regression line is obtained when the sum of the squared residuals is minimized.
A. True B. False
39) When a dummy variable is included in a multiple regression model, the interpretation of the estimated slope coefficient does not make any sense.
A. True B. False
40) An inverse relationship between an independent variable x and a dependent variable y means that, as x increases, y decreases, and vice versa.
A. True B. False
41) If the coefficient of correlation is –0.81, then the percentage of the variation in y that is explained by the regression line is 81%.
A. True B. False
42) Except for the values r = -1, 0, and 1, we cannot be specific in our interpretation of the coefficient of correlation r. However, when we square it, we produce a more meaningful statistic.
A. True B. False
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