1. The association between the variables "dollars earned" and"hours worked" for a worker at store would be

	a.	POSITIVE
	b.	NEGATIVE
	c.	NEITHER

QUESTION 2

The association between the variables "GPA" and "hours spentstudying" for a student would usually be

	a.	POSITIVE
	b.	NEGATIVE
	c.	NEITHER

QUESTION 3

The association between the variables "cost of a book" and "thebuyers body temperature" would be

	a.	POSITIVE
	b.	NEGATIVE
	c.	NEITHER

QUESTION 4

The association between the variables "airfare" and "distance todestination" would be

	a.	POSITIVE
	b.	NEGATIVE
	c.	NEITHER

QUESTION 5

A graph that will help to one to see what type of curve might bestfit the bivariate data

	a.	Pie chart
	b.	stem-leaf plot
	c.	dot plot
	d.	scatter plot

QUESTION 6

If the correlation coefficient for a linear regression is -0.932.there is sufficient evidence that a linear relationship existsbetween the x and y data

	a.	TRUE
	b.	FALSE

QUESTION 7

Which of the following correlation coefficients represents the mostlinear function?

	a.	0.976
	b.	0.001
	c.	-0.002
	d.	-0.989

QUESTION 8

If the correlation coefficient for linear regression is 0.25. thereis sufficient evidence that a linear relationship exists betweenthe x and y data

	a.	TRUE
	b.	FALSE

QUESTION 9

A data point that lies statistically far from the regression lineis a potential

	a.	response variable
	b.	predictor variable
	c.	extrapolated variable
	d.	outlier

QUESTION 10

1. correlation5:
   
   If the correlation coefficient is 0.90, the value of thecoefficient of determination would be

	a.	0.90
	b.	0.81
	c.	0.45
	d.	0.10

QUESTION 11

Use your TI83 to determine the correlation coefficient of thefollowing set of points. Round correctly to the nearesthundredth.

(4, 4), (-2, -7), (3, 3), (4, -1)

QUESTION 12

Use your TI83 to determine the correlation coefficient of thefollowing set of points. Round correctly to the nearesthundredth.

(4, 4), (-2, -4), (7, -2), (4, 1)

QUESTION 13

Use your TI83 to determine the correlation coefficient of thefollowing set of points. Round correctly to the nearesthundredth.

(2, 4), (1, -1), (2, 2), (5, -4)