1.	A best-fit line drawn on a scatter plot ________
		A.	must be drawn through the first and last data points.
		B.	always has a positive slope.
		C.	is a line that goes through every data point.
		D.	approximates the linear relationship of data points.
		Hint
	2.	The scatter plot below shows the women's winning marathon times and the high temperatures on the marathon days. Which prediction equation best shows how marathon times and temperature are related?
		A.		B.
		C.		D.
		Hint
	3.	A best-fit line is drawn on a scatter plot showing the average daily temperature and the number of people at a public swimming pool. The slope of the line would probably be ________
		A.	negative.	B.	zero.
		C.	undefined.	D.	positive.
		Hint
	4.	How do the medians of the two sets of exam scores compare?
		A.	The median of Exam A is greater than the median of Exam B.
		B.	The answer cannot be determined since the median is not shown in a box and whisker plot.
		C.	The median of Exam A is less than the median of Exam B.
		D.	The medians are equal.
		Hint
	5.	For which scatter plot will a good line of fit have a negative y-intercept?
		A.		B.
		C.		D.
		Hint