Question 1

The nominal scale of measurement has the properties of the

Accepted Answer

A)  ordinal scale 
B)  only interval scale 
C)  ratio scale 
D)  None of these alternatives is correct. 
A)  ordinal scale 
B)  only interval scale 
C)  ratio scale 
D)  None of these alternatives is correct.

Question 2

A population is

Accepted Answer

A)  the same as a sample 
B)  the selection of a random sample 
C)  the collection of all items of interest in a particular study 
D)  always the same size as the sample 
A)  the same as a sample 
B)  the selection of a random sample 
C)  the collection of all items of interest in a particular study 
D)  always the same size as the sample

Question 3

Exhibit 1-2
In a sample of 1,600 registered voters, 912, or 57%, approve of the way the President is doing his job.
-Refer to Exhibit 1-2. A political pollster states: "Fifty-seven percent of all voters approve of the President." This statement is an example of

Accepted Answer

A)  a sample 
B)  Data and Statistics 
C)  statistical inference 
D)  a population 
A)  a sample 
B)  Data and Statistics 
C)  statistical inference 
D)  a population

Question 4

A recent issue of a national magazine reported that in a national public opinion survey conducted among 2,000 individuals, 56% were in favor of gun control, 40% opposed gun control, and 4% had no opinion on the subject.
a. What is the sample in this survey?
b. Based on the sample, what percentage of the population would you think is in favor of gun control?
c. Based on the sample, what percentage of the population would you think have no opinion on the subject?

Accepted Answer

a. The 2000 individu

Question 5

The interval scale of measurement has the properties of the

Accepted Answer

A)  ratio and nominal scales 
B)  ratio and ordinal scales 
C)  ratio scale 
D)  None of these alternatives is correct. 
A)  ratio and nominal scales 
B)  ratio and ordinal scales 
C)  ratio scale 
D)  None of these alternatives is correct.

Question 6

Exhibit 1-5
The following is a frequency distribution of the monthly expenditures for long distance telephone service of 200 households in Chattanooga.
 $\begin{array}{|c|c|c|}
\hline\text { Class } & \text { Expenditure \$) } & \text { \# of households } \
\hline 1 & 0 \text { and under } 20 & 42 \
\hline 2 & 20 \text { and under 40 } & 64 \
\hline 3 & 40 \text { and under } 60 & 34 \
\hline 4 & 60 \text { and under } 80 & 28 \
\hline 5 & 80 \text { and under } 100 & 20 \
\hline 6 & 100 \text { and over } & 12\\hline
\end{array}$
-Refer to Exhibit 1-5. What is the cumulative relative frequency of the 2nd class?

Accepted Answer

A)  .32 
B)  .64 
C)  .36 
D)  .53 
A)  .32 
B)  .64 
C)  .36 
D)  .53

Question 7

The owner of a factory regularly requests a graphical summary of all employees' salaries. The graphical summary of salaries is an example of

Accepted Answer

A)  a sample 
B)  Data and Statistics 
C)  statistical inference 
D)  an experiment 
A)  a sample 
B)  Data and Statistics 
C)  statistical inference 
D)  an experiment

Question 8

The following information regarding the ten richest Americans was reported in a recent issue of Forbes.
 \(\begin{array}{|l|c|c|c|l|l|}
\hline \text { Name }&\text { Ranking } & \begin{array}{c}
\text { Worth } \
\text { \$Billions) }
\end{array} & \text { Age } & \begin{array}{c}
\text { Marital } \
\text { Status }
\end{array} & \text { Source } \
\hline \text { Gates, William } & 1 & 72.0 & 51 & \text { married } & \text { Microso } \
\hline \text { Buffett, Warren } & 2 & 52.0 & 77 & \text { married } & \text { Berkshire Hathaway } \
\hline \text { Adelson, Sheldon } & 3 & 28.0 & 74 & \text { married } & \text { casinos, hotels } \
\hline \text { Ellison, L. J. } & 4 & 26.0 & 63 & \text { married } & \text { Oracle } \
\hline \text { Brin, Sergey } & 5 & 18.5 & 34 & \text { married } & \text { Google } \
\hline \text { Page, Larry } & 5 & 18.5 & 34 & \text { single } & \text { Google } \
\hline \text { Kerkorian, Kirk } & 7 & 18.0 & 90 & \text { divorced } & \text { investments, casinos } \
\hline \text { Dell, Michael } & 8 & 17.2 & 42 & \text { married } & \text { Dell } \
\hline \text { Koch, Charles } & 9 & 17.0 & 71 & \text { married } & \text { oil, commodities } \
\hline \text { Koch, David } & 9 & 17.0 & 67 & \text { married } & \text { oil, commodities } \
\hline
\end{array}\) 
a. How many elements are in the above data set?
b. How many variables are in this data set?
c. How many observations are in this data set?
d. Which variables are categorical and which are quantitative?
e. What measurement scale is used for each variable?

Accepted Answer

a. 10
b. 5
c. 10
d. Worth and

Question 9

Exhibit 1-3
Part of the data bank of a corporation is shown below.
 $\begin{array}{|c|l|l|c|c|c|}
\hline \text { Employee } &&& \text { Years of } & \text { Employee Rank } \
\text { Number } & \text { Gender } & \text { Department } & \text { Experience } & \mathbf{1}-\mathbf{1 0}) & \text { Yearly Salary } \
\hline 23450 & \text { Male } & \text { Accounting } & 15 & 10 & \$ 52,443.00 \
\hline 34568 & \text { Female } & \text { IT } & 24 & 7 & \$ 111,239.00 \
\hline 23123 & \text { Female } & \text { Personnel } & 20 & 4 & \$ 84,473.00 \
\hline 23007 & \text { Male } & \text { Finance } & 9 & 1 & \$ 47,519.00\\hline
\end{array}$
-Refer to Exhibit 1-3. Employee Number is an example of data.

Accepted Answer

A)  nominal 
B)  ordinal 
C)  interval 
D)  ratio 
A)  nominal 
B)  ordinal 
C)  interval 
D)  ratio

Question 10

On a street, the houses are numbered from 300 to 450. The house numbers are examples of

Accepted Answer

A)  categorical data 
B)  quantitative data 
C)  both quantitative and categorical data 
D)  neither quantitative nor categorical data 
A)  categorical data 
B)  quantitative data 
C)  both quantitative and categorical data 
D)  neither quantitative nor categorical data

Question 11

The set of measurements collected for a particular element is are) called

Accepted Answer

A)  variables 
B)  observations 
C)  samples 
D)  None of these alternatives is correct. 
A)  variables 
B)  observations 
C)  samples 
D)  None of these alternatives is correct.

Question 12

The ratio scale of measurement has the properties of

Accepted Answer

A)  only the ordinal scale 
B)  only the nominal scale 
C)  the rank scale 
D)  the interval scale 
A)  only the ordinal scale 
B)  only the nominal scale 
C)  the rank scale 
D)  the interval scale

Question 13

The ordinal scale of measurement has the properties of the

Accepted Answer

A)  ratio scale 
B)  interval scale 
C)  nominal scale 
D)  ratio and interval scales 
A)  ratio scale 
B)  interval scale 
C)  nominal scale 
D)  ratio and interval scales

Question 14

Exhibit 1-3
Part of the data bank of a corporation is shown below.
 $\begin{array}{|c|l|l|c|c|c|}
\hline \text { Employee } &&& \text { Years of } & \text { Employee Rank } \
\text { Number } & \text { Gender } & \text { Department } & \text { Experience } & \mathbf{1}-\mathbf{1 0}) & \text { Yearly Salary } \
\hline 23450 & \text { Male } & \text { Accounting } & 15 & 10 & \$ 52,443.00 \
\hline 34568 & \text { Female } & \text { IT } & 24 & 7 & \$ 111,239.00 \
\hline 23123 & \text { Female } & \text { Personnel } & 20 & 4 & \$ 84,473.00 \
\hline 23007 & \text { Male } & \text { Finance } & 9 & 1 & \$ 47,519.00\\hline
\end{array}$
-Refer to Exhibit 1-3. Years of Experience is an example of data.

Accepted Answer

A)  nominal 
B)  ordinal 
C)  interval 
D)  ratio 
A)  nominal 
B)  ordinal 
C)  interval 
D)  ratio

Question 15

Which of the following can be classified as quantitative data?

Accepted Answer

A)  interval and ordinal 
B)  ratio and ordinal 
C)  nominal and ordinal 
D)  interval and ratio 
A)  interval and ordinal 
B)  ratio and ordinal 
C)  nominal and ordinal 
D)  interval and ratio

Question 16

Exhibit 1-3
Part of the data bank of a corporation is shown below.
 $\begin{array}{|c|l|l|c|c|c|}
\hline \text { Employee } &&& \text { Years of } & \text { Employee Rank } \
\text { Number } & \text { Gender } & \text { Department } & \text { Experience } & \mathbf{1}-\mathbf{1 0}) & \text { Yearly Salary } \
\hline 23450 & \text { Male } & \text { Accounting } & 15 & 10 & \$ 52,443.00 \
\hline 34568 & \text { Female } & \text { IT } & 24 & 7 & \$ 111,239.00 \
\hline 23123 & \text { Female } & \text { Personnel } & 20 & 4 & \$ 84,473.00 \
\hline 23007 & \text { Male } & \text { Finance } & 9 & 1 & \$ 47,519.00\\hline
\end{array}$
-Refer to Exhibit 1-3. Yearly Salary is an example of data.

Accepted Answer

A)  nominal 
B)  ordinal 
C)  interval 
D)  ratio 
A)  nominal 
B)  ordinal 
C)  interval 
D)  ratio

Question 17

In a data set, the number of elements will always be the same as the number of

Accepted Answer

A)  independent variables 
B)  observations 
C)  data points 
D)  dependent variables 
A)  independent variables 
B)  observations 
C)  data points 
D)  dependent variables

Question 18

The highway patrol is interested in determining the average speed of automobiles traveling on I-75 between Chattanooga and Atlanta. To accomplish this task, the speed of every tenth car passing a particular point on I-75 is recorded.
a. What is the population for this study?
b. What constitutes the sample?
c. Is speed a categorical or a quantitative variable?
d. What type of measurement scale is used?

Accepted Answer

a. All the automobil

Question 19

Statistical inference

Accepted Answer

A)  refers to the process of drawing inferences about the sample based on the characteristics of the population 
B)  is the same as Data and Statistics 
C)  is the process of drawing inferences about the population based on the information taken from the sample 
D)  is the same as a census 
A)  refers to the process of drawing inferences about the sample based on the characteristics of the population 
B)  is the same as Data and Statistics 
C)  is the process of drawing inferences about the population based on the information taken from the sample 
D)  is the same as a census

Question 20

Exhibit 1-4
In many universities, students evaluate their professors by means of answering a questionnaire. Assume a questionnaire is distributed to a class of 45 students. Students are asked to answer the following:
1. Sex
2. Race Black, White, Other)
3. Age
4. Number of hours completed
5. Grade point average
"6. My instructor is a very effective teacher
 $$\begin{array}{l}
1&2&3&4&5\
\text { strongly agree } & \text {moderately agree} & \text { neutral } & \text {moderately disagree} & \text { strongly disagree }\\end{array}$$ "
-Refer to Exhibit 1-4. How many variables are in this data set?

Accepted Answer

A)  3 
B)  4 
C)  5 
D)  6 
A)  3 
B)  4 
C)  5 
D)  6

The nominal scale of measurement has the properties of the

A population is

Exhibit 1-2 In a sample of 1,600 registered voters, 912, or 57%, approve of the way the President is doing his job. -Refer to Exhibit 1-2. A political pollster states: "Fifty-seven percent of all voters approve of the President." This statement is an example of

The interval scale of measurement has the properties of the

The owner of a factory regularly requests a graphical summary of all employees' salaries. The graphical summary of salaries is an example of

On a street, the houses are numbered from 300 to 450. The house numbers are examples of

The set of measurements collected for a particular element is are) called

The ratio scale of measurement has the properties of

The ordinal scale of measurement has the properties of the

Which of the following can be classified as quantitative data?

In a data set, the number of elements will always be the same as the number of

Statistical inference

Descriptive Statistics: Tabular and Graphical Displays

Descriptive Statistics: Numerical Measures

Introduction to Probability

Discrete Probability Distributions

Continuous Probability Distributions

Sampling and Sampling Distributions

Interval Estimation

Hypothesis Tests

Comparisons Involving Means, Experimental Design, and Analysis of Variance

Comparisons Involving Proportions and a Test of Independence

Simple Linear Regression

Multiple Regression

Filters

Exam 1: Data and Statistics

The nominal scale of measurement has the properties of the

A population is

Exhibit 1-2 In a sample of 1,600 registered voters, 912, or 57%, approve of the way the President is doing his job. -Refer to Exhibit 1-2. A political pollster states: "Fifty-seven percent of all voters approve of the President." This statement is an example of

The interval scale of measurement has the properties of the

The owner of a factory regularly requests a graphical summary of all employees' salaries. The graphical summary of salaries is an example of

On a street, the houses are numbered from 300 to 450. The house numbers are examples of

The set of measurements collected for a particular element is are) called

The ratio scale of measurement has the properties of

The ordinal scale of measurement has the properties of the

Which of the following can be classified as quantitative data?

In a data set, the number of elements will always be the same as the number of

Statistical inference

Descriptive Statistics: Tabular and Graphical Displays

Descriptive Statistics: Numerical Measures

Introduction to Probability

Discrete Probability Distributions

Continuous Probability Distributions

Sampling and Sampling Distributions

Interval Estimation

Hypothesis Tests

Comparisons Involving Means, Experimental Design, and Analysis of Variance

Comparisons Involving Proportions and a Test of Independence

Simple Linear Regression

Multiple Regression

Filters