QUESTION 4

Which of the following is not an indication of potential multicollinearity problems?

	a.	The sign on the standard error of the estimate is positive.
	b.	A sign on a regression slope coefficient is negative when the sign on the correlation coefficient was positive.
	c.	The standard error of the estimate increases when a variable enters the model in the presence of other independent variables.
	d.	An independent variable goes from being statistically significant to being insignificant when a new variable is added to the model.