Question: 6. Which one is NOT correct? a. R square sometimes goes down when an explanatory variable is added. b. Adjusted R square adjusts for the

6. Which one is NOT correct? a. R square sometimes goes down when an explanatory variable is added. b. Adjusted R square adjusts for the number of independent variables. c. In regression, we want to explain the dependent variable in terms of independent variables. d. In ordinary least squares, estimated coefficients are obtained by minimizing the residual sum of squares

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