Question 1

If both variables being analyzed are nominal data, the best method to reveal any potential connections between them would be with a __________.

Accepted Answer

A) bar chart 
B) scatter plot 
C) cross tabulation 
D) two pie charts 
E) line graphs 
A) bar chart 
B) scatter plot 
C) cross tabulation 
D) two pie charts 
E) line graphs

Question 2

Sales are tracked during the past year in the graph below.   What would be the most effective strategy to allow management to more clearly discern monthly trends in sales?

Accepted Answer

A) Remove the total value from being included in the graph. 
B) Have the axis on the left show more detailed grid lines between 0 and 100 
C) Show the trend line in a more vivid color. 
D) Add labels to each of the graphed data points. 
E) Add minor grid lines throughout the graph making values more clear. 
A) Remove the total value from being included in the graph. 
B) Have the axis on the left show more detailed grid lines between 0 and 100 
C) Show the trend line in a more vivid color. 
D) Add labels to each of the graphed data points. 
E) Add minor grid lines throughout the graph making values more clear.

Question 3

A shirt production company has tracked their production since the company started in 1999.The graph of their annual production is shown.   During these years, production has generally _______________.

Accepted Answer

A) increased in these years. 
B) declined in most of the years shown. 
C) increased in every year since 1999. 
D) decreased in most of those years. 
E) increased and declined without a discernable trend. 
A) increased in these years. 
B) declined in most of the years shown. 
C) increased in every year since 1999. 
D) decreased in most of those years. 
E) increased and declined without a discernable trend.

Question 4

When looking at a scatter plot, if a trend can be discerned between changes in one variable that appear to be related to changes in the other variable, there is likely a relationship between the two variables.

Accepted Answer

A) True 
 B)False

Question 5

To show hourly sales throughout a day, a ________ chart would be most effective, and a _________ chart would be more effective at showing what products were sold during that day.

Accepted Answer

A) pie, line 
B) line, line 
C) pie, bar 
D) line, pie 
E) bar, pie 
A) pie, line 
B) line, line 
C) pie, bar 
D) line, pie 
E) bar, pie

Question 6

A scatter plot indicates that two variables are unrelated as their data are scattered.

Accepted Answer

A) True 
 B)False

Question 7

Consider the following frequency distribution: $$\begin{array} { l c } 
\text { Class Interval } & \text { Frequency } \
10 \text {-under } 20 & 15 \
20 \text {-under } 30 & 25 \
30 \text {-under } 40 & 10
\end{array}$$
What is the midpoint of the first class?

Accepted Answer

A) 10 
B) 20 
C) 15 
D) 30 
E) 40 
A) 10 
B) 20 
C) 15 
D) 30 
E) 40

Question 8

A summary of data in which raw data are grouped into different ordered intervals and the number of items in each group is noted is called a frequency distribution.

Accepted Answer

A) True 
 B)False

Question 9

An instructor made a frequency table of the scores his students got on a test 
$$\begin{array} { c c } 
\text { Score } & \text { Frequency } \
30 \text {-under } 40 & 1 \
40 \text {-under } 50 & 4 \
50 \text {-under } 60 & 5 \
60 \text {-under } 70 & 10 \
70 \text {-under } 80 & 20 \
80 \text {-under } 90 & 10 \
90 \text {-under } 100 & 5
\end{array}$$
Approximately what percent of students got more than 70?

Accepted Answer

A) 36 
B) 20 
C) 50 
D) 10 
E) 64 
A) 36 
B) 20 
C) 50 
D) 10 
E) 64

Question 10

The following graphic of cigarettes smoked (sold)per capita (CIG)and deaths per 100K population from lung cancer (LUNG)indicates _________

Accepted Answer

A) a weak negative relationship between the two variables 
B) a somewhat positive relationship between the two variables 
C) when the number of cigarettes smoked (sold)per capita (CIG)increases the deaths per 100K population from lung cancer (LUNG)decreases 
D) a negative relationship between the two variables 
E) no relationship between the two variables 
A) a weak negative relationship between the two variables 
B) a somewhat positive relationship between the two variables 
C) when the number of cigarettes smoked (sold)per capita (CIG)increases the deaths per 100K population from lung cancer (LUNG)decreases 
D) a negative relationship between the two variables 
E) no relationship between the two variables

Question 11

Pinky Bauer, Chief Financial Officer of Harrison Haulers, Inc., suspects irregularities in the payroll system and orders an inspection of "each and every payroll voucher issued since January 1, 2000." Each payroll voucher was inspected and the following frequency distribution was compiled. $\begin{array}{c}
\begin{array}{c}
\text { Errors per Voucher}\
\text { 0 -under 2}\
\text { 2-under 4}\
\text { 4-under 6}\
\text { 6-under 8}\
\text { 8-under 10}
\end{array}
\begin{array}{c}
\text {Number of Vouchers}\
500 \
400 \
300 \
200 \
100
\end{array}
\end{array}$

The cumulative frequency of the second class interval is _________.

Accepted Answer

A) 1,500 
B) 500 
C) 900 
D) 1,000 
E) 1,200 
A) 1,500 
B) 500 
C) 900 
D) 1,000 
E) 1,200

Question 12

Consider the following frequency distribution: $$\begin{array} { l c } 
\text { Class Interval } & \text { Frequency } \
100 \text {-under } 200 & 25 \
200 \text {-under } 300 & 45 \
300 \text {-under } 400 & 30
\end{array}$$
What is the midpoint of the first class?

Accepted Answer

A) 100 
B) 150 
C) 25 
D) 250 
E) 200 
A) 100 
B) 150 
C) 25 
D) 250 
E) 200

Question 13

A frequency distribution was developed.The lower endpoint of the first class is 9.30, and the midpoint is 9.35.What is the upper endpoint of this class?

Accepted Answer

A) 9.50 
B) 9.60 
C) 9.70 
D) 9.40 
E) 9.80 
A) 9.50 
B) 9.60 
C) 9.70 
D) 9.40 
E) 9.80

Question 14

Pinky Bauer, Chief Financial Officer of Harrison Haulers, Inc., suspects irregularities in the payroll system and orders an inspection of "each and every payroll voucher issued since January 1, 2000." Each payroll voucher was inspected and the following frequency distribution was compiled. $\begin{array}{c}
\begin{array}{c}
\text { Errors per Voucher}\
\text { 0 -under 2}\
\text { 2-under 4}\
\text { 4-under 6}\
\text { 6-under 8}\
\text { 8-under 10}
\end{array}
\begin{array}{c}
\text {Number of Vouchers}\
500 \
400 \
300 \
200 \
100
\end{array}
\end{array}$

The relative frequency of the first class interval is _________.

Accepted Answer

A) 0.50 
B) 0.33 
C) 0.40 
D) 0.27 
E) 0.67 
A) 0.50 
B) 0.33 
C) 0.40 
D) 0.27 
E) 0.67

Question 15

Dot Plots are mainly used to display a large data set.

Accepted Answer

A) True 
 B)False

Question 16

Consider the relative frequency distribution given below: 
$$\begin{array} { l c } 
\text { Class Interval } & \text { Relative Frequency } \
\text { 20-under } 40 & 0.2 \
40 \text {-under } 60 & 0.3 \
60 \text {-under } 80 & 0.4 \
\text { 80-under } 100 & 0.1
\end{array}$$
There were 60 numbers in the data set.How many numbers were in the interval 40-under 60?

Accepted Answer

A) 30 
B) 50 
C) 18 
D) 12 
E) 15 
A) 30 
B) 50 
C) 18 
D) 12 
E) 15

Question 17

The point of "cleaning" time-series data is to be sure all the data are accurate.

Accepted Answer

A) True 
 B)False

Question 18

Abel Alonzo, Director of Human Resources, is exploring employee absenteeism at Harrison Haulers, Inc.during the last operating year.A review of all personnel records indicated that absences ranged from zero to twenty-nine days per employee.The following class intervals were proposed for a frequency distribution of absences. $\begin{array}{c}
\begin{array}{l}
\text { Absences}\
\text { (Days)}\
\text { 0 -under 5}\
\text { 5-under 10}\
\text { 10-under 15}\
\text { 20 -under 25}\
\text { 25 -under 30}\
\end{array}
\begin{array}{r}
\text { Number of Employees }\
\
-\
-\
-\
-\
-\
\end{array}
\end{array}$

Which of the following represents a problem with this set of intervals?

Accepted Answer

A) There are too few intervals. 
B) Some numbers between 0 and 29, inclusively, would not fall into any interval. 
C) The first and second interval overlaps. 
D) There are too many intervals. 
E) The second and the third interval overlap. 
A) There are too few intervals. 
B) Some numbers between 0 and 29, inclusively, would not fall into any interval. 
C) The first and second interval overlaps. 
D) There are too many intervals. 
E) The second and the third interval overlap.

Question 19

Consider the following frequency distribution: $$\begin{array} { l c } 
\text { Class Interval } & \text { Frequency } \
100 \text {-under } 200 & 25 \
200 \text {-under } 300 & 45 \
300 \text {-under } 400 & 30
\end{array}$$
What is the relative frequency of the second class interval?

Accepted Answer

A) 0.45 
B) 0.70 
C) 0.30 
D) 0.33 
E) 0.50 
A) 0.45 
B) 0.70 
C) 0.30 
D) 0.33 
E) 0.50

Question 20

The following graphic of residential housing data (selling price and size in square feet)is a _____________.

Accepted Answer

A) scatter plot 
B) Pareto chart 
C) pie chart 
D) cumulative histogram 
E) cumulative frequency distribuion 
A) scatter plot 
B) Pareto chart 
C) pie chart 
D) cumulative histogram 
E) cumulative frequency distribuion

If both variables being analyzed are nominal data, the best method to reveal any potential connections between them would be with a __________.

Sales are tracked during the past year in the graph below. What would be the most effective strategy to allow management to more clearly discern monthly trends in sales?

A shirt production company has tracked their production since the company started in 1999.The graph of their annual production is shown. During these years, production has generally _______________.

When looking at a scatter plot, if a trend can be discerned between changes in one variable that appear to be related to changes in the other variable, there is likely a relationship between the two variables.

To show hourly sales throughout a day, a chart would be most effective, and a _ chart would be more effective at showing what products were sold during that day.

A scatter plot indicates that two variables are unrelated as their data are scattered.

Consider the following frequency distribution: Class Interval Frequency 10 -under 20 15 20 -under 30 25 30 -under 40 10 What is the midpoint of the first class?

A summary of data in which raw data are grouped into different ordered intervals and the number of items in each group is noted is called a frequency distribution.

An instructor made a frequency table of the scores his students got on a test Score Frequency 30 -under 40 1 40 -under 50 4 50 -under 60 5 60 -under 70 10 70 -under 80 20 80 -under 90 10 90 -under 100 5 Approximately what percent of students got more than 70?

The following graphic of cigarettes smoked (sold)per capita (CIG)and deaths per 100K population from lung cancer (LUNG)indicates _________

Consider the following frequency distribution: Class Interval Frequency 100 -under 200 25 200 -under 300 45 300 -under 400 30 What is the midpoint of the first class?

A frequency distribution was developed.The lower endpoint of the first class is 9.30, and the midpoint is 9.35.What is the upper endpoint of this class?

Dot Plots are mainly used to display a large data set.

Consider the relative frequency distribution given below: Class Interval Relative Frequency 20-under 40 0.2 40 -under 60 0.3 60 -under 80 0.4 80-under 100 0.1 There were 60 numbers in the data set.How many numbers were in the interval 40-under 60?

The point of "cleaning" time-series data is to be sure all the data are accurate.

Consider the following frequency distribution: Class Interval Frequency 100 -under 200 25 200 -under 300 45 300 -under 400 30 What is the relative frequency of the second class interval?

The following graphic of residential housing data (selling price and size in square feet)is a _____________.

Introduction to Statistics and Business Analytics

Descriptive Statistics

Probability

Discrete Distributions

Continuous Distributions

Sampling and Sampling Distributions

Statistical Inference: Estimation for Single Populations

Statistical Inference: Hypothesis Testing for Single Populations

Statistical Inferences About Two Populations

Analysis of Variance and Design of Experiments

Simple Regression Analysis and Correlation

Multiple Regression Analysis

Building Multiple Regression Models

Time-Series Forecasting and Index Numbers

Analysis of Categorical Data

Nonparametric Statistics

Statistical Quality Control

Decision Analysis

Filters

Exam 2: Visualizing Data With Charts and Graphs

If both variables being analyzed are nominal data, the best method to reveal any potential connections between them would be with a __________.

Sales are tracked during the past year in the graph below. What would be the most effective strategy to allow management to more clearly discern monthly trends in sales?

A shirt production company has tracked their production since the company started in 1999.The graph of their annual production is shown. During these years, production has generally _______________.

When looking at a scatter plot, if a trend can be discerned between changes in one variable that appear to be related to changes in the other variable, there is likely a relationship between the two variables.

To show hourly sales throughout a day, a ________ chart would be most effective, and a _________ chart would be more effective at showing what products were sold during that day.

A scatter plot indicates that two variables are unrelated as their data are scattered.

Consider the following frequency distribution: Class Interval Frequency 10 -under 20 15 20 -under 30 25 30 -under 40 10 What is the midpoint of the first class?

A summary of data in which raw data are grouped into different ordered intervals and the number of items in each group is noted is called a frequency distribution.

An instructor made a frequency table of the scores his students got on a test Score Frequency 30 -under 40 1 40 -under 50 4 50 -under 60 5 60 -under 70 10 70 -under 80 20 80 -under 90 10 90 -under 100 5 Approximately what percent of students got more than 70?

The following graphic of cigarettes smoked (sold)per capita (CIG)and deaths per 100K population from lung cancer (LUNG)indicates _________

Consider the following frequency distribution: Class Interval Frequency 100 -under 200 25 200 -under 300 45 300 -under 400 30 What is the midpoint of the first class?

A frequency distribution was developed.The lower endpoint of the first class is 9.30, and the midpoint is 9.35.What is the upper endpoint of this class?

Dot Plots are mainly used to display a large data set.

Consider the relative frequency distribution given below: Class Interval Relative Frequency 20-under 40 0.2 40 -under 60 0.3 60 -under 80 0.4 80-under 100 0.1 There were 60 numbers in the data set.How many numbers were in the interval 40-under 60?

The point of "cleaning" time-series data is to be sure all the data are accurate.

Consider the following frequency distribution: Class Interval Frequency 100 -under 200 25 200 -under 300 45 300 -under 400 30 What is the relative frequency of the second class interval?

The following graphic of residential housing data (selling price and size in square feet)is a _____________.

Introduction to Statistics and Business Analytics

Descriptive Statistics

Probability

Discrete Distributions

Continuous Distributions

Sampling and Sampling Distributions

Statistical Inference: Estimation for Single Populations

Statistical Inference: Hypothesis Testing for Single Populations

Statistical Inferences About Two Populations

Analysis of Variance and Design of Experiments

Simple Regression Analysis and Correlation

Multiple Regression Analysis

Building Multiple Regression Models

Time-Series Forecasting and Index Numbers

Analysis of Categorical Data

Nonparametric Statistics

Statistical Quality Control

Decision Analysis

Filters

To show hourly sales throughout a day, a chart would be most effective, and a _ chart would be more effective at showing what products were sold during that day.