Question 1

SCENARIO 2-12
The table below contains the opinions of a sample of 200 people broken down by gender about the latest congressional plan to eliminate anti-trust exemptions for professional baseball. $$\begin{array} { l c c c c } 
& \text { For } & \text { Neutral } &  \text { Against } & \text {  Totals } \
\hline  \text { Female } & 38 & 54 & 12 & 104 \
\text { Male } & 12 & 36 & 48 & 96 \
\text { Totals } & 50 & 90 & 60 & 200
\end{array}$$
-Referring to Scenario 2-12, if the sample is a good representation of the population, we can expect percent of the females in the population will not be against the plan.

Accepted Answer

The answer of SCENARIO 2-12
The table below contains the opinions...

Question 2

SCENARIO 2-14
The table below contains the number of people who own a portable Blu-ray player in a sample of 600 broken down by gender. $$\begin{array}{l}
\text { Own a Portable }\
\begin{array} { l r c } 
\text { Blu-ray player } & \text { Male } & \text { Female } \
\text { Yes } & 96 & 40 \
\text { No } & 224 & 240 \
\hline
\end{array}
\end{array}$$
-Referring to Scenario 2-14, percent of the 600 were females who either owned or did not own a portable Blu-ray player.

Accepted Answer

The answer of SCENARIO 2-14
The table below contains the number...

Question 3

SCENARIO 2-4
A survey was conducted to determine how people rated the quality of programming available on television.Respondents were asked to rate the overall quality from 0 (no quality at all) to 100 (extremely good quality).The stem-and-leaf display of the data is shown below. $$\begin{array} { l l } 
\text { Stem } & \text { Leaves } \
\hline 3 & 24 \
4 & 03478999 \
5 & 0112345 \
6 & 12566 \
7 & 01 \
8 & \
9 & 2
\end{array}$$
-Referring to Scenario 2-4, what percentage of the respondents rated overall television quality with a rating of 50 or below?

Accepted Answer

A) 11 
B) 40 
C) 44 
D) 56

Question 4

The Best Practices for Creating Visual Summaries recommend using the simplest possible visualization.

Accepted Answer

A) True 
 B)False

Question 5

SCENARIO 2-1
An insurance company evaluates many numerical variables about a person before deciding on an appropriate rate for automobile insurance.A representative from a local insurance agency selected a random sample of insured drivers and recorded, X, the number of claims each made in the last 3 years, with the following results. $$\begin{array} { r r } 
X & f \
\hline 1 & 14 \
2 & 18 \
3 & 12 \
4 & 5 \
5 & 1
\end{array}$$
-Referring to Scenario 2-1, how many drivers are represented in the sample?

Accepted Answer

A) 5 
B) 15 
C) 18 
D) 50

Question 6

SCENARIO 2-5
The following are the duration in minutes of a sample of long-distance phone calls made within the continental United States reported by one long-distance carrier. $$\begin{array} { l c } 
\text { Time(inMinutes) } & \begin{array} { c } 
\text { Relative } \
\text { Frequency }
\end{array} \
\hline 0 \text { but less than } 5 & 0.37 \
5 \text { but less than } 10 & 0.22 \
10 \text { but less than } 15 & 0.15 \
15 \text { but less than } 20 & 0.10 \
20 \text { but less than } 25 & 0.07 \
25 \text { but less than } 30 & 0.07 \
30 \text { or more } & 0.02
\end{array}$$
-Referring to Scenario 2-5, what is the cumulative relative frequency for the percentage of calls that lasted under 20 minutes?

Accepted Answer

A) 0.10 
B) 0.59 
C) 0.76 
D) 0.84

Question 7

A Walmart store in a small town monitors customer complaints and organizes these complaints into six distinct categories.Over the past year, suppose the company has received 534 complaints.One possible graphical method for representing these data would be a Pareto chart.

Accepted Answer

A) True 
 B)False

Question 8

SCENARIO 2-14
The table below contains the number of people who own a portable Blu-ray player in a sample of 600 broken down by gender. $$\begin{array}{l}
\text { Own a Portable }\
\begin{array} { l r c } 
\text { Blu-ray player } & \text { Male } & \text { Female } \
\text { Yes } & 96 & 40 \
\text { No } & 224 & 240 \
\hline
\end{array}
\end{array}$$
-Referring to Scenario 2-14, percent of the 600 were females who owned a portableBlu-ray player.

Accepted Answer

The answer of SCENARIO 2-14
The table below contains the number...

Question 9

SCENARIO 2-12
The table below contains the opinions of a sample of 200 people broken down by gender about the latest congressional plan to eliminate anti-trust exemptions for professional baseball. $$\begin{array} { l c c c c } 
& \text { For } & \text { Neutral } &  \text { Against } & \text {  Totals } \
\hline  \text { Female } & 38 & 54 & 12 & 104 \
\text { Male } & 12 & 36 & 48 & 96 \
\text { Totals } & 50 & 90 & 60 & 200
\end{array}$$
-Referring to Scenario 2-12, percent of the 200 were males who were not against the plan.

Accepted Answer

The answer of SCENARIO 2-12
The table below contains the opinions...

Question 10

SCENARIO 2-18
The stem-and-leaf display below shows the result of a survey on 50 students on their satisfaction with their school with the higher scores represent higher level of satisfaction. 
-Referring to Scenario 2-18, how many students have a satisfaction level below 60?

Accepted Answer

The answer of SCENARIO 2-18
The stem-and-leaf display below shows the...

Question 11

SCENARIO 2-18
The stem-and-leaf display below shows the result of a survey on 50 students on their satisfaction with their school with the higher scores represent higher level of satisfaction. 
-Referring to Scenario 2-18, how many students have a satisfaction level in the 50s?

Accepted Answer

The answer of SCENARIO 2-18
The stem-and-leaf display below shows the...

Question 12

A type of vertical bar chart in which the categories are plotted in the descending rank order of the magnitude of their frequencies is called a

Accepted Answer

A) contingency table. 
B) Pareto chart. 
C) stem-and-leaf display. 
D) pie chart.

Question 13

SCENARIO 2-7
The Stem-and-Leaf display below contains data on the number of months between the date a civil suit is filed and when the case is actually adjudicated for 50 cases heard in superior court.Stem Leaves $$\begin{array} { l l } 
1 & 234447899 \
2 & 22223455678889 \
3 & 0011135778 \
4 & 02345579 \
5 & 112466 \
6 & 158
\end{array}$$
-Referring to Scenario 2-7, the civil suit with the fourth shortest waiting time between when the suit was filed and when it was adjudicated had a wait of months.

Accepted Answer

The answer of SCENARIO 2-7
The Stem-and-Leaf display below contains data...

Question 14

An ogive is a cumulative percentage polygon.

Accepted Answer

A) True 
 B)False

Question 15

SCENARIO 2-16
The figure below is the percentage polygon for the number of calories for a sample of 36 pizzas products where the upper limits of the intervals are: 310, 340, 370, 400 and 430. 
-Referring to Scenario 2-16, roughly what percentage of pizza products contains at least 340 calories?

Accepted Answer

A) 25% 
B) 28% 
C) 39% 
D) 61%

Question 16

SCENARIO 2-14
The table below contains the number of people who own a portable Blu-ray player in a sample of 600 broken down by gender. $$\begin{array}{l}
\text { Own a Portable }\
\begin{array} { l r c } 
\text { Blu-ray player } & \text { Male } & \text { Female } \
\text { Yes } & 96 & 40 \
\text { No } & 224 & 240 \
\hline
\end{array}
\end{array}$$
-Referring to Scenario 2-14, of the females in the sample, percent did not own a portable Blu-ray player.

Accepted Answer

The answer of SCENARIO 2-14
The table below contains the number...

Question 17

SCENARIO 2-7
The Stem-and-Leaf display below contains data on the number of months between the date a civil suit is filed and when the case is actually adjudicated for 50 cases heard in superior court.Stem Leaves $$\begin{array} { l l } 
1 & 234447899 \
2 & 22223455678889 \
3 & 0011135778 \
4 & 02345579 \
5 & 112466 \
6 & 158
\end{array}$$
-Referring to Scenario 2-7, locate the first leaf, i.e., the lowest valued leaf with the lowest valued stem.This represents a wait of months.

Accepted Answer

The answer of SCENARIO 2-7
The Stem-and-Leaf display below contains data...

Question 18

If the values of the seventh and eighth class in a cumulative percentage distribution are the same, we know that there are no observations in the eighth class.

Accepted Answer

A) True 
 B)False

Question 19

SCENARIO 2-11
The ordered array below resulted from selecting a sample of 25 batches of 500 computer chips and determining how many in each batch were defective. $$\begin{array}{l}
\text { Defects }\
\begin{array} { l l r r r r r r r r r r r } 
1 & 2 & 4 & 4 & 5 & 5 & 6 & 7 & 9 & 9 & 12 & 12 & 15 \
17 & 20 & 21 & 23 & 23 & 25 & 26 & 27 & 27 & 28 & 29 & 29 &
\end{array}
\end{array}$$
-Referring to Scenario 2-11, construct a relative frequency or percentage distribution for the defects data, using "0 but less than 5" as the first class.

Accepted Answer

The answer of SCENARIO 2-11
The ordered array below resulted from...

Question 20

You have collected data on the number of U.S.households actively using online banking and/or online bill payment over a 10-year period.Which of the following is the best for presenting the data?

Accepted Answer

A) A pie chart. 
B) A stem-and-leaf display 
C) A side-by-side bar chart. 
D) A time-series plot.

Exam 2: Organizing and Visualizing Variables

The Best Practices for Creating Visual Summaries recommend using the simplest possible visualization.

A Walmart store in a small town monitors customer complaints and organizes these complaints into six distinct categories.Over the past year, suppose the company has received 534 complaints.One possible graphical method for representing these data would be a Pareto chart.

SCENARIO 2-18 The stem-and-leaf display below shows the result of a survey on 50 students on their satisfaction with their school with the higher scores represent higher level of satisfaction. -Referring to Scenario 2-18, how many students have a satisfaction level below 60?

SCENARIO 2-18 The stem-and-leaf display below shows the result of a survey on 50 students on their satisfaction with their school with the higher scores represent higher level of satisfaction. -Referring to Scenario 2-18, how many students have a satisfaction level in the 50s?

A type of vertical bar chart in which the categories are plotted in the descending rank order of the magnitude of their frequencies is called a

An ogive is a cumulative percentage polygon.

SCENARIO 2-16 The figure below is the percentage polygon for the number of calories for a sample of 36 pizzas products where the upper limits of the intervals are: 310, 340, 370, 400 and 430. -Referring to Scenario 2-16, roughly what percentage of pizza products contains at least 340 calories?

If the values of the seventh and eighth class in a cumulative percentage distribution are the same, we know that there are no observations in the eighth class.

You have collected data on the number of U.S.households actively using online banking and/or online bill payment over a 10-year period.Which of the following is the best for presenting the data?