Introduction to the Practice of Statistics 9th edition by David S. Moore Test bank
Name: __________________________ Date: _____________
1.A study is conducted on students taking a statistics class. Several variables are recorded in the survey. Identify each variable as categorical or quantitative.
A) The type of car the student owns
B) The number of credit hours taken during that semester
C) The time the student waited in line at the bookstore to pay for his/her textbooks
D) The home state of the student
2.Researchers are conducting a state-wide survey for the U.S. Postal Service. The survey records many different variables of interest. Which of the following variables is categorical?
A)The county of residence
B)The number of people, both adults and children, living in the household
C)The total household income, before taxes, in 2010
D)The age of the respondent
3.A particularly common question in the study of wildlife behavior involves observing contests between “residents” of a particular area and “intruders.” In each contest, the residents either win or lose the encounter (assuming there are no ties). Observers might record several variables, some of which are listed below. Which of these variables is categorical?
A)The duration of the contest (in seconds)
B)The number of animals involved in the contest
C)Whether the residents win or lose
D)The total number of contests won by the residents
4.A description of different houses on the market includes the following three variables. Which of these variables is quantitative?
A)The square footage of the house
B)The monthly gas bill
C)The monthly electric bill
D)All of the above
5.Jason is buying a new computer. He is comparing various models using many different variables. These variables play an important role in making the decision about which computer he will buy. Identify each of the following variables as categorical or quantitative.
A) Does the computer come with an HDMI port?
B) What is the hard drive size of the computer?
C) Is the computer a laptop or a desktop model?
D) How much does the computer cost?
6.A variable is a characteristic of a
A)case.
B)label.
C)value.
D)None of the above
7.Categorical variables place cases into ____ group(s).
A)one
B)no
C)many
D)numeric
8.Variables that take numeric values for which arithmetic operations make sense are called _______.
A)quantitative
B)categorical
C)distributions
D)cases
9.A type of variable where arithmetic operations do not make sense are called _______.
A)quantitative
B)categorical
C)distributions
D)cases
10.Variables take on ________.
A)values
B)cases
C)distributions
D)None of the above
11.What are labels used for in data sets?
A)To identify distributions
B)To identify values
C)To identify cases
D)None of the above
12.We have a data set where the cases are college students. One of the variables in the data set is “gender.” The values of gender are 1 if the student is male and 2 if the student is female. What type of variable is gender?
A)Quantitative
B)Categorical
C)Quantitative and categorical
D)None of the above
13.We have a data set where the cases are college students. One of the variables in the data set is “age of the student.” What type of variable is age of the student?
A)Quantitative
B)Categorical
C)Quantitative and categorical
D)None of the above
14.We have a data set where the cases are college students. One of the variables in the data set is “hometown.” What type of variable is hometown?
A)Quantitative
B)Categorical
C)Quantitative and categorical
D)None of the above
15.The units of measurement are an important part of the description of what type of variables?
A)Quantitative
B)Categorical
C)Quantitative and categorical
D)None of the above
16.We have a data set where the cases are college students. One of the variables in the data set is “grade.” The values of grade are 4 if the student received an A, 3 if the student received a B, 2 if the student received a C, 1 if the student received a D, and 0 if the student received an A. What type of variable is grade?
1.A study is conducted on students taking a statistics class. Several variables are recorded in the survey. Identify each variable as categorical or quantitative.
A) The type of car the student owns
B) The number of credit hours taken during that semester
C) The time the student waited in line at the bookstore to pay for his/her textbooks
D) The home state of the student
2.Researchers are conducting a state-wide survey for the U.S. Postal Service. The survey records many different variables of interest. Which of the following variables is categorical?
A)The county of residence
B)The number of people, both adults and children, living in the household
C)The total household income, before taxes, in 2010
D)The age of the respondent
3.A particularly common question in the study of wildlife behavior involves observing contests between “residents” of a particular area and “intruders.” In each contest, the residents either win or lose the encounter (assuming there are no ties). Observers might record several variables, some of which are listed below. Which of these variables is categorical?
A)The duration of the contest (in seconds)
B)The number of animals involved in the contest
C)Whether the residents win or lose
D)The total number of contests won by the residents
4.A description of different houses on the market includes the following three variables. Which of these variables is quantitative?
A)The square footage of the house
B)The monthly gas bill
C)The monthly electric bill
D)All of the above
5.Jason is buying a new computer. He is comparing various models using many different variables. These variables play an important role in making the decision about which computer he will buy. Identify each of the following variables as categorical or quantitative.
A) Does the computer come with an HDMI port?
B) What is the hard drive size of the computer?
C) Is the computer a laptop or a desktop model?
D) How much does the computer cost?
6.A variable is a characteristic of a
A)case.
B)label.
C)value.
D)None of the above
7.Categorical variables place cases into ____ group(s).
A)one
B)no
C)many
D)numeric
8.Variables that take numeric values for which arithmetic operations make sense are called _______.
A)quantitative
B)categorical
C)distributions
D)cases
9.A type of variable where arithmetic operations do not make sense are called _______.
A)quantitative
B)categorical
C)distributions
D)cases
10.Variables take on ________.
A)values
B)cases
C)distributions
D)None of the above
11.What are labels used for in data sets?
A)To identify distributions
B)To identify values
C)To identify cases
D)None of the above
12.We have a data set where the cases are college students. One of the variables in the data set is “gender.” The values of gender are 1 if the student is male and 2 if the student is female. What type of variable is gender?
A)Quantitative
B)Categorical
C)Quantitative and categorical
D)None of the above
13.We have a data set where the cases are college students. One of the variables in the data set is “age of the student.” What type of variable is age of the student?
A)Quantitative
B)Categorical
C)Quantitative and categorical
D)None of the above
14.We have a data set where the cases are college students. One of the variables in the data set is “hometown.” What type of variable is hometown?
A)Quantitative
B)Categorical
C)Quantitative and categorical
D)None of the above
15.The units of measurement are an important part of the description of what type of variables?
A)Quantitative
B)Categorical
C)Quantitative and categorical
D)None of the above
16.We have a data set where the cases are college students. One of the variables in the data set is “grade.” The values of grade are 4 if the student received an A, 3 if the student received a B, 2 if the student received a C, 1 if the student received a D, and 0 if the student received an A. What type of variable is grade?