Question: 1. When additional independent variables are added to a multiple regression model, ________. R 2 will always increase the independent variables will be correlated the

1. When additional independent variables are added to a multiple regression model, ________.

		R² will always increase
		the independent variables will be correlated
		the coefficient of multiple determination decreases
		the adjusted R² will always increase

2. Which of the following are true assumptions underlying linear regression? (1) For each value of X, there is a group of Y values that is normally distributed. (2) The means of these normal distributions of Y values all lie on the regression line. (3) The standard deviations of these normal distributions are equal.

		Only (1)
		All of these choices are correct.
		Only (3)
		Only (2)

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