23 Which one of the following statements is true? A When an additional explanatory variable is introduced into a multiple regression model, the coefficient of multiple determination will moderately decrease When an additional explanatory variable is introduced into a multiple regression model, the adjusted r2 can never decrease. C When an explanatory variable is dropped from a multiple regression model, the coefficient of multiple determination can increase. D When an explanatory variable is dropped from a multiple regression model, the adjusted r2 can increase. E None of the suggested answers are correct. Scanned with CamScanner

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