1.	The number of calories for a serving of different brands of potato chips and tortilla chips is shown in the back-to-back stem-and-leaf plot below. Which statement is correct?
		A.	Most of the tortilla chip brands have less than 150 calories per serving.
		B.	Potato chips and tortilla chips both have the same mean number of calories.
		C.	Most of the potato chip brands have less than 150 calories per serving.
		D.	The data for potato chips and the data for tortilla chips have the same mode(s).
		Hint
	2.	Find the mean of {3, 8, 10, 1, 25}.
		A.	9	B.	8
		C.	9.4	D.	1
		Hint
	3.	What is implied when it is said that x and y have a negative correlation?
		A.	When the value of x increases, the value of y decreases.
		B.	When the value of x is negative, the value of y negative.
		C.	When the value of x increases, the value of y does not necessarily increase or decrease.
		D.	When the value of x increases, the value of y increases.
		Hint
	4.	Which relationship would most likely have no correlation?
		A.	A person's height and the person's shoe size.
		B.	The number of miles driven, and the number of gallons of gas in the car.
		C.	The number of pizzas ordered, and the total price of the bill.
		D.	A person's age, and the address of the person.
		Hint
	5.	Steve needed to find out which classes people liked the most. Therefore, after he arrived at his math club meeting, he asked some people there. What kind of sample is this?
		A.	unbiased, random sample	B.	biased, convenience
		C.	biased, voluntary	D.	unbiased, random stratified sample
		Hint
	6.	Find .
		A.
		B.
		C.
		D.	impossible
		Hint
	7.	Which of the following frequencies occurs most often?
		A.	12	B.	10
		C.	14	D.	8
		Hint
	8.	A histogram is a graph in which the data are organized into equal _______.
		A.	tallies	B.	elements
		C.	intervals	D.	bars
		Hint
	9.	Which reflects the convenience sampling method that a language arts teacher might use to identify the most popular book read by the language arts students?
		A.	Ask every third student from the 60 students sitting in a study hall.	B.	Ask students who are wearing a red shirt.
		C.	Ask all the students in one geometry class.	D.	Ask the first 10 students who walk into the classroom.
		Hint
	10.	Find the mode of {2, 4, 14, 2, 12, 10, 4, 14, 2}.
		A.	2	B.	14
		C.	No mode	D.	4
		Hint
	11.	What is the range of the stem-and-leaf plot?
		A.	77	B.	67
		C.	84	D.	71
		Hint
	12.	Find the mean of the data in the stem-and-leaf plot.
		A.	77	B.	78
		C.	67	D.	99
		Hint
	13.	During the month that had three days of rain, how many had above-average temperatures?
		A.	2	B.	5
		C.	8	D.	3
		Hint
	14.	What is the mode of the number of rainy days each month?
		A.	5	B.	8
		C.	6	D.	7
		Hint
	15.	Which relationship will most likely have a positive correlation?
		A.	Increasing snow inches, and sled sales.
		B.	Rising temperatures and ski equipment sales.
		C.	Battery power of a flashlight, and continued use of the flashlight.
		D.	A person's height and a person's eye color.
		Hint
	16.	Which relationship will most likely have a no correlation?
		A.	Increasing snow inches, and sled sales.
		B.	Battery power of a flashlight, and continued use of the flashlight.
		C.	A person's height and a person's eye color.
		D.	Rising temperatures and ski equipment sales.
		Hint
	17.	Using the box-and-whisker plot, what is the median of Exam B?
		A.	83	B.	60
		C.	90	D.	75
		Hint
	18.	Using the box-and-whisker plot, what is the first quartile of Exam B?
		A.	83	B.	75
		C.	72	D.	63
		Hint
	19.	What appears to happen in the graph?
		A.	Sales have dropped.	B.	Sales have cut in half each month.
		C.	Sales have doubled each month.	D.	Sales have slightly increased.
		Hint
	20.	How could the graph be changed so it is not misleading?
		A.	Change the graph from vertical to horizontal.	B.	Color should be added.
		C.	Change the vertical scale so that the maximum value is 100.	D.	Diameters of the cans should be the same.
		Hint