Test Bank For
Introductory Statistics, 10th Edition by Prem S. Mann
Chapter 1-15
Chapter 1 Introduction
1.1 Statistics and Types of Statistics
1) Under descriptive statistics, we study:
A) the methods to make decisions about one or more populations based on sample results
B) the methods for organizing, displaying, and describing data
C) how to describe the probability distribution
D) samples to assist in decision making
Answer: B
Diff: 1
LO: 1.1.0 Demonstrate an understanding of the types of statistics.
Section: 1.1 Statistics and Types of Statistics
Question Title: Chapter 01, Testbank Question 001
2) Under inferential statistics, we study:
A) the methods to make decisions about one or more populations based on sample results
B) the methods for organizing, displaying, and describing data
C) how to describe the frequency distribution
D) types of summary measures
Answer: A
Diff: 1
LO: 1.1.0 Demonstrate an understanding of the types of statistics.
Section: 1.1 Statistics and Types of Statistics
Question Title: Chapter 01, Testbank Question 002
3) True or False: In statistics, a population consists of all subjects or objects whose characteristics
are being studied.
Answer: TRUE
Diff: 1
LO: 1.1.0 Demonstrate an understanding of the types of statistics.
Section: 1.1 Statistics and Types of Statistics
Question Title: Chapter 01, Testbank Question 003
4) In statistics, we define a sample as:
A) people living in one city only
B) the target population
C) all items under investigation
D) a portion of the population
Answer: D
Diff: 1
LO: 1.1.0 Demonstrate an understanding of the types of statistics.
Section: 1.1 Statistics and Types of Statistics
1
,Question Title: Chapter 01, Testbank Question 004
1.2 Basic Terms
1) An observation is a:
A) graph observed for a data set
B) value of a variable for a single element
C) table prepared for a data set
D) sample observed from the population
Answer: B
Diff: 1
LO: 1.2.0 Demonstrate an understanding of the basic terms used in statistics.
Section: 1.2 Basic Terms
Question Title: Chapter 01, Testbank Question 005
2) An independent group wants to determine if the consumption of gasoline has increased due to
changes in price. The group randomly selects 320 gas stations from 12 different states and collects
data from the month of the year when gas is the cheapest and from the month of the year when gas
is the most expensive. The data shows no significant difference in gas consumption between the
two months. In this example, what is the variable being studied?
A) The 320 gas stations chosen
B) The 12 different states
C) The consumption of gasoline
D) The price of gasoline
Answer: C
Diff: 1
LO: 1.2.0 Demonstrate an understanding of the basic terms used in statistics.
Section: 1.2 Basic Terms
Question Title: Chapter 01, Testbank Question 006
3) A data set is a:
A) set of decisions made about the population
B) set of graphs and pictures
C) collection of observations on one or more variables
D) score collected from an element of the population
Answer: C
Diff: 1
LO: 1.2.0 Demonstrate an understanding of the basic terms used in statistics.
Section: 1.2 Basic Terms
Question Title: Chapter 01, Testbank Question 007
2
,Use the following to answer the questions below.
The following table lists the temperatures (in degrees Fahrenheit) of essential workers
entering a medical facility.
Temperature
(in degrees
Essential Worker Fahrenheit)
Sam 99.4
Betty 98.0
Lateshia 98.9
Amani 98.3
Connor 97.6
Vincent 99.6
Maria 98.0
4) What is the variable for this data set?
Answer: Temperature
Diff: 1
LO: 1.2.0 Demonstrate an understanding of the basic terms used in statistics.
Section: 1.2 Basic Terms
Question Title: Chapter 01, Testbank Question 008
5) How many observations are in this data set?
Answer: 7
Diff: 1
LO: 1.2.0 Demonstrate an understanding of the basic terms used in statistics.
Section: 1.2 Basic Terms
Question Title: Chapter 01, Testbank Question 009
6) How many elements does this data set contain?
Answer: 7
Diff: 1
LO: 1.2.0 Demonstrate an understanding of the basic terms used in statistics.
Section: 1.2 Basic Terms
Question Title: Chapter 01, Testbank Question 010
1.3 Types of Variables
1) A quantitative variable is the only type of variable that can:
A) assume numeric values for which arithmetic operations make sense
B) be graphed
C) be used to prepare tables
D) have no intermediate values
Answer: A
Diff: 1
LO: 1.3.0 Demonstrate an understanding of the types of variables used in statistics.
Section: 1.3 Types of Variables
3
,Question Title: Chapter 01, Testbank Question 011
2) A discrete variable is a variable that can assume:
A) categorical values only
B) a countable set of values only
C) an uncountable set of values
D) non-numerical values
Answer: B
Diff: 1
LO: 1.3.0 Demonstrate an understanding of the types of variables used in statistics.
Section: 1.3 Types of Variables
Question Title: Chapter 01, Testbank Question 012
3) A continuous variable is a variable that can assume:
A) categorical values only
B) a countable set of values only
C) any value in an interval
D) non-numerical values
Answer: C
Diff: 1
LO: 1.3.0 Demonstrate an understanding of the types of variables used in statistics.
Section: 1.3 Types of Variables
Question Title: Chapter 01, Testbank Question 013
4) A qualitative variable is a variable that:
A) can assume numerical values
B) cannot be graphed
C) can assume an uncountable set of values
D) cannot be measured numerically
Answer: D
Diff: 1
LO: 1.3.0 Demonstrate an understanding of the types of variables used in statistics.
Section: 1.3 Types of Variables
Question Title: Chapter 01, Testbank Question 014
5) Is the "size of a university's enrollment increase from last year to this year" an example of
qualitative or quantitative data?
Answer: Quantitative
Diff: 1
LO: 1.3.0 Demonstrate an understanding of the types of variables used in statistics.
Section: 1.3 Types of Variables
Question Title: Chapter 01, Testbank Question 015
6) Is the variable "lengths of top-ten hit songs" discrete or continuous?
Answer: Continuous
Diff: 1
LO: 1.3.0 Demonstrate an understanding of the types of variables used in statistics.
Section: 1.3 Types of Variables
4
,Question Title: Chapter 01, Testbank Question 016
7) Classify the variable as discrete or continuous: Durations of your last 30 cell phone calls.
Answer: Continuous
Diff: 1
LO: 1.3.0 Demonstrate an understanding of the types of variables used in statistics.
Section: 1.3 Types of Variables
Question Title: Chapter 01, Testbank Question 017
8) The two types of quantitative variables are continuous and ________.
Answer: discrete
Diff: 1
LO: 1.3.0 Demonstrate an understanding of the types of variables used in statistics.
Section: 1.3 Types of Variables
Question Title: Chapter 01, Testbank Question 018
1.4 Cross-Section Versus Time-Series Data
1) Time-series data are collected:
A) on the same element for the same variable at different points in time
B) on a variable that involves time, e.g., minutes, hours, weeks, months, etc.
C) for a qualitative variable
D) on different elements for the same period of time
Answer: A
Diff: 1
LO: 1.4.0 Demonstrate an understanding of cross-section and time-series data.
Section: 1.4 Cross-Section Versus Time-Series Data
Question Title: Chapter 01, Testbank Question 019
2) Cross-section data are collected:
A) on the same variable for the same variable at different points in time
B) on different elements at the same point in time
C) for a qualitative variable
D) on different elements for the same variable for different periods of time
Answer: B
Diff: 1
LO: 1.4.0 Demonstrate an understanding of cross-section and time-series data.
Section: 1.4 Cross-Section Versus Time-Series Data
Question Title: Chapter 01, Testbank Question 020
3) Is the total insect population among 12 U.S. national parks in 2017 an example of time-series or
cross-section data?
Answer: Cross-section
Diff: 1
LO: 1.4.0 Demonstrate an understanding of cross-section and time-series data.
Section: 1.4 Cross-Section Versus Time-Series Data
Question Title: Chapter 01, Testbank Question 021
5
, 4) Classify the following as cross-section or time-series data: Monthly telephone bill for each
family in an apartments complex.
Answer: Cross-section data
Diff: 2
LO: 1.4.0 Demonstrate an understanding of cross-section and time-series data.
Section: 1.4 Cross-Section Versus Time-Series Data
Question Title: Chapter 01, Testbank Question 022
1.5 Population Versus Sample
1) In statistics, the population that is being studied is often referred to as the:
A) studied population
B) null population
C) target population
D) projected population
Answer: C
Diff: 1
LO: 1.5.0 Demonstrate an understanding of the difference between a population and a sample.
Section: 1.5 Population Versus Sample
Question Title: Chapter 01, Testbank Question 023
2) In statistics, conducting a survey means:
A) collecting information from elements of a sample
B) making mathematical calculations
C) drawing pictures and graphs
D) none of these
Answer: A
Diff: 1
LO: 1.5.0 Demonstrate an understanding of the difference between a population and a sample.
Section: 1.5 Population Versus Sample
Question Title: Chapter 01, Testbank Question 024
3) In statistics, conducting a census means:
A) making decisions based on sample results
B) checking if a variable is qualitative or quantitative
C) collecting information from all members of the population
D) collecting a sample with replacement
Answer: C
Diff: 1
LO: 1.5.0 Demonstrate an understanding of the difference between a population and a sample.
Section: 1.5 Population Versus Sample
Question Title: Chapter 01, Testbank Question 025
4) A statistician wants to determine the total annual medical costs incurred by all U.S. states from
1995 to 2015 as a result of health problems related to smoking. She polls each of the 50 states
annually to obtain health care expenditures, in dollars, on smoking-related illnesses. Does this
study constitute a survey or a census. Explain.
6
Introductory Statistics, 10th Edition by Prem S. Mann
Chapter 1-15
Chapter 1 Introduction
1.1 Statistics and Types of Statistics
1) Under descriptive statistics, we study:
A) the methods to make decisions about one or more populations based on sample results
B) the methods for organizing, displaying, and describing data
C) how to describe the probability distribution
D) samples to assist in decision making
Answer: B
Diff: 1
LO: 1.1.0 Demonstrate an understanding of the types of statistics.
Section: 1.1 Statistics and Types of Statistics
Question Title: Chapter 01, Testbank Question 001
2) Under inferential statistics, we study:
A) the methods to make decisions about one or more populations based on sample results
B) the methods for organizing, displaying, and describing data
C) how to describe the frequency distribution
D) types of summary measures
Answer: A
Diff: 1
LO: 1.1.0 Demonstrate an understanding of the types of statistics.
Section: 1.1 Statistics and Types of Statistics
Question Title: Chapter 01, Testbank Question 002
3) True or False: In statistics, a population consists of all subjects or objects whose characteristics
are being studied.
Answer: TRUE
Diff: 1
LO: 1.1.0 Demonstrate an understanding of the types of statistics.
Section: 1.1 Statistics and Types of Statistics
Question Title: Chapter 01, Testbank Question 003
4) In statistics, we define a sample as:
A) people living in one city only
B) the target population
C) all items under investigation
D) a portion of the population
Answer: D
Diff: 1
LO: 1.1.0 Demonstrate an understanding of the types of statistics.
Section: 1.1 Statistics and Types of Statistics
1
,Question Title: Chapter 01, Testbank Question 004
1.2 Basic Terms
1) An observation is a:
A) graph observed for a data set
B) value of a variable for a single element
C) table prepared for a data set
D) sample observed from the population
Answer: B
Diff: 1
LO: 1.2.0 Demonstrate an understanding of the basic terms used in statistics.
Section: 1.2 Basic Terms
Question Title: Chapter 01, Testbank Question 005
2) An independent group wants to determine if the consumption of gasoline has increased due to
changes in price. The group randomly selects 320 gas stations from 12 different states and collects
data from the month of the year when gas is the cheapest and from the month of the year when gas
is the most expensive. The data shows no significant difference in gas consumption between the
two months. In this example, what is the variable being studied?
A) The 320 gas stations chosen
B) The 12 different states
C) The consumption of gasoline
D) The price of gasoline
Answer: C
Diff: 1
LO: 1.2.0 Demonstrate an understanding of the basic terms used in statistics.
Section: 1.2 Basic Terms
Question Title: Chapter 01, Testbank Question 006
3) A data set is a:
A) set of decisions made about the population
B) set of graphs and pictures
C) collection of observations on one or more variables
D) score collected from an element of the population
Answer: C
Diff: 1
LO: 1.2.0 Demonstrate an understanding of the basic terms used in statistics.
Section: 1.2 Basic Terms
Question Title: Chapter 01, Testbank Question 007
2
,Use the following to answer the questions below.
The following table lists the temperatures (in degrees Fahrenheit) of essential workers
entering a medical facility.
Temperature
(in degrees
Essential Worker Fahrenheit)
Sam 99.4
Betty 98.0
Lateshia 98.9
Amani 98.3
Connor 97.6
Vincent 99.6
Maria 98.0
4) What is the variable for this data set?
Answer: Temperature
Diff: 1
LO: 1.2.0 Demonstrate an understanding of the basic terms used in statistics.
Section: 1.2 Basic Terms
Question Title: Chapter 01, Testbank Question 008
5) How many observations are in this data set?
Answer: 7
Diff: 1
LO: 1.2.0 Demonstrate an understanding of the basic terms used in statistics.
Section: 1.2 Basic Terms
Question Title: Chapter 01, Testbank Question 009
6) How many elements does this data set contain?
Answer: 7
Diff: 1
LO: 1.2.0 Demonstrate an understanding of the basic terms used in statistics.
Section: 1.2 Basic Terms
Question Title: Chapter 01, Testbank Question 010
1.3 Types of Variables
1) A quantitative variable is the only type of variable that can:
A) assume numeric values for which arithmetic operations make sense
B) be graphed
C) be used to prepare tables
D) have no intermediate values
Answer: A
Diff: 1
LO: 1.3.0 Demonstrate an understanding of the types of variables used in statistics.
Section: 1.3 Types of Variables
3
,Question Title: Chapter 01, Testbank Question 011
2) A discrete variable is a variable that can assume:
A) categorical values only
B) a countable set of values only
C) an uncountable set of values
D) non-numerical values
Answer: B
Diff: 1
LO: 1.3.0 Demonstrate an understanding of the types of variables used in statistics.
Section: 1.3 Types of Variables
Question Title: Chapter 01, Testbank Question 012
3) A continuous variable is a variable that can assume:
A) categorical values only
B) a countable set of values only
C) any value in an interval
D) non-numerical values
Answer: C
Diff: 1
LO: 1.3.0 Demonstrate an understanding of the types of variables used in statistics.
Section: 1.3 Types of Variables
Question Title: Chapter 01, Testbank Question 013
4) A qualitative variable is a variable that:
A) can assume numerical values
B) cannot be graphed
C) can assume an uncountable set of values
D) cannot be measured numerically
Answer: D
Diff: 1
LO: 1.3.0 Demonstrate an understanding of the types of variables used in statistics.
Section: 1.3 Types of Variables
Question Title: Chapter 01, Testbank Question 014
5) Is the "size of a university's enrollment increase from last year to this year" an example of
qualitative or quantitative data?
Answer: Quantitative
Diff: 1
LO: 1.3.0 Demonstrate an understanding of the types of variables used in statistics.
Section: 1.3 Types of Variables
Question Title: Chapter 01, Testbank Question 015
6) Is the variable "lengths of top-ten hit songs" discrete or continuous?
Answer: Continuous
Diff: 1
LO: 1.3.0 Demonstrate an understanding of the types of variables used in statistics.
Section: 1.3 Types of Variables
4
,Question Title: Chapter 01, Testbank Question 016
7) Classify the variable as discrete or continuous: Durations of your last 30 cell phone calls.
Answer: Continuous
Diff: 1
LO: 1.3.0 Demonstrate an understanding of the types of variables used in statistics.
Section: 1.3 Types of Variables
Question Title: Chapter 01, Testbank Question 017
8) The two types of quantitative variables are continuous and ________.
Answer: discrete
Diff: 1
LO: 1.3.0 Demonstrate an understanding of the types of variables used in statistics.
Section: 1.3 Types of Variables
Question Title: Chapter 01, Testbank Question 018
1.4 Cross-Section Versus Time-Series Data
1) Time-series data are collected:
A) on the same element for the same variable at different points in time
B) on a variable that involves time, e.g., minutes, hours, weeks, months, etc.
C) for a qualitative variable
D) on different elements for the same period of time
Answer: A
Diff: 1
LO: 1.4.0 Demonstrate an understanding of cross-section and time-series data.
Section: 1.4 Cross-Section Versus Time-Series Data
Question Title: Chapter 01, Testbank Question 019
2) Cross-section data are collected:
A) on the same variable for the same variable at different points in time
B) on different elements at the same point in time
C) for a qualitative variable
D) on different elements for the same variable for different periods of time
Answer: B
Diff: 1
LO: 1.4.0 Demonstrate an understanding of cross-section and time-series data.
Section: 1.4 Cross-Section Versus Time-Series Data
Question Title: Chapter 01, Testbank Question 020
3) Is the total insect population among 12 U.S. national parks in 2017 an example of time-series or
cross-section data?
Answer: Cross-section
Diff: 1
LO: 1.4.0 Demonstrate an understanding of cross-section and time-series data.
Section: 1.4 Cross-Section Versus Time-Series Data
Question Title: Chapter 01, Testbank Question 021
5
, 4) Classify the following as cross-section or time-series data: Monthly telephone bill for each
family in an apartments complex.
Answer: Cross-section data
Diff: 2
LO: 1.4.0 Demonstrate an understanding of cross-section and time-series data.
Section: 1.4 Cross-Section Versus Time-Series Data
Question Title: Chapter 01, Testbank Question 022
1.5 Population Versus Sample
1) In statistics, the population that is being studied is often referred to as the:
A) studied population
B) null population
C) target population
D) projected population
Answer: C
Diff: 1
LO: 1.5.0 Demonstrate an understanding of the difference between a population and a sample.
Section: 1.5 Population Versus Sample
Question Title: Chapter 01, Testbank Question 023
2) In statistics, conducting a survey means:
A) collecting information from elements of a sample
B) making mathematical calculations
C) drawing pictures and graphs
D) none of these
Answer: A
Diff: 1
LO: 1.5.0 Demonstrate an understanding of the difference between a population and a sample.
Section: 1.5 Population Versus Sample
Question Title: Chapter 01, Testbank Question 024
3) In statistics, conducting a census means:
A) making decisions based on sample results
B) checking if a variable is qualitative or quantitative
C) collecting information from all members of the population
D) collecting a sample with replacement
Answer: C
Diff: 1
LO: 1.5.0 Demonstrate an understanding of the difference between a population and a sample.
Section: 1.5 Population Versus Sample
Question Title: Chapter 01, Testbank Question 025
4) A statistician wants to determine the total annual medical costs incurred by all U.S. states from
1995 to 2015 as a result of health problems related to smoking. She polls each of the 50 states
annually to obtain health care expenditures, in dollars, on smoking-related illnesses. Does this
study constitute a survey or a census. Explain.
6
