1.	A best-fit line drawn on a scatter plot ________
		A.	is a line that goes through every data point.
		B.	must be drawn through the first and last data points.
		C.	always has a positive slope.
		D.	approximates the linear relationship of data points.
		Hint
	2.	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.	undefined.
		C.	zero.	D.	positive.
		Hint
	3.	The table below shows the land-speed records to the nearest mile per hour. Draw a scatter plot for the data and use it to predict the approximate land-speed record for the year 2005. Assume the rate of increase of speed records remains the same.
		A.	830 mph	B.	600 mph
		C.	980 mph	D.	700 mph
		Hint
	4.	The table shows the average heights (in centimeters) of females ages 1-14. If this trend continues, about how tall will an average fifteen-year-old female be?
		A.	156.9 cm	B.	163.7 cm
		C.	160.3 cm	D.	168.5 cm
		Hint
	5.	When finding the equation for a line of fit for a scatter plot, you should use __________.
		A.	the point most characteristic of the scatter plot	B.	two points that you think represent the data well
		C.	all of the points on the plot	D.	the first and last points on the plot, with respect to the horizontal
		Hint