Question 1

To evaluate two categorical variables at the same time, a ________ could be developed.

Accepted Answer

The answer of To evaluate two categorical variables at the...

Question 2

An ogive is a cumulative percentage polygon.

Accepted Answer

An ogive graph is a cumulative frequency polygon that shows the cumulative frequency distribution. It represents the total number or percentage of observations that are less than or equal to a particular value on the horizontal axis.

Question 3

Apple Computer, Inc. collected information on the age of their customers. The youngest customer was 12 and the oldest was 72. To study the distribution of the age among its customers, it is best to use a pie chart.

Accepted Answer

A pie chart is not the best choice for displaying the distribution of age among customers because it is difficult to accurately compare the sizes of the slices and it does not provide an easy way to see the frequency or number of customers in each age group. A histogram or bar chart would be a better choice for displaying the age distribution.

Question 4

TABLE 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.
 $$\begin{array} { l c c c r } 
& \text { For } & \text { Neutral } & \text { Aqainst } & \text { Totals } \
 \text { Female } & 38 & 54 & 12 & 104 \
\text { Male } & 12 & 36 & 48 & 96 \
 \text { Totals } & 50 & 90 & 60 & 200
\end{array}$$
-Referring to Table 2-12, construct a table of row percentages.

Accepted Answer

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

Question 5

If you wish to construct a graph of a relative frequency distribution, you would most likely construct an ogive first.

Accepted Answer

To construct a graph of a relative frequency distribution, you would typically create a histogram or a polygon. An ogive is a graph used to show cumulative frequencies, not relative frequencies.

Question 6

A polygon can be constructed from a bar chart.

Accepted Answer

A polygon is a plane figure that is described by a finite number of straight line segments connected to form a closed polygonal chain or polygonal circuit. A bar chart, however, represents data with rectangular bars and does not form a closed polygonal shape, making it impossible to construct a polygon directly from a bar chart.

Question 7

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

Accepted Answer

A Pareto chart is a graphical method used to represent data by showing the most frequent occurrences in descending order. It is commonly used to identify sources of problems or complaints in a process or system. Therefore, a Pareto chart would be a suitable graphical method for representing customer complaints organized into different categories at a Wal-Mart store.

Question 8

A good choice for the number of class groups to use in constructing frequency distribution is to have at least 5 but no more than 15 class groups.

Accepted Answer

Having at least 5 but no more than 15 class groups is a good choice for constructing a frequency distribution as it provides enough detail without being too complex to interpret. However, depending on the range of the data and the specific context, a different number of class groups may be more appropriate.

Question 9

To determine the width of class interval, divide the number of class groups by the range of the data.

Accepted Answer

To determine the width of class interval, we divide the range of the data by the number of class groups.

Question 10

A side-by-side chart is two histograms plotted side-by-side.

Accepted Answer

The answer of A side-by-side chart is two histograms plotted...

Question 11

Apple Computer, Inc. collected information on the age of their customers. The youngest customer was 12 and the oldest was 72. To study the distribution of the age among its customers, it can use a Pareto chart.

Accepted Answer

A Pareto chart is used to show the frequency of occurrences of different categories, ranked in descending order. It is not appropriate for showing the distribution of numerical data such as age. A histogram or box plot would be more appropriate for that purpose.

Question 12

Relationships in a contingency table can be examined more fully if the frequencies are converted into ________.

Accepted Answer

The answer of Relationships in a contingency table can be...

Question 13

TABLE 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.
 $$\begin{array} { l c c c r } 
& \text { For } & \text { Neutral } & \text { Aqainst } & \text { Totals } \
 \text { Female } & 38 & 54 & 12 & 104 \
\text { Male } & 12 & 36 & 48 & 96 \
 \text { Totals } & 50 & 90 & 60 & 200
\end{array}$$
-Referring to Table 2-12, construct a table of total percentages.

Accepted Answer

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

Question 14

Apple Computer, Inc. collected information on the age of their customers. The youngest customer was 12 and the oldest was 72. To study the distribution of the age among its customers, it can use a percentage polygon.

Accepted Answer

A percentage polygon is a graph that shows the distribution of a frequency distribution as a line that connects points representing the cumulative percent frequency. It can be used to show the distribution of ages among Apple's customers.

Question 15

Apple Computer, Inc. collected information on the age of their customers. The youngest customer was 12 and the oldest was 72. To study the percentage of their customers who are below a certain age, it can use an ogive.

Accepted Answer

An ogive can be used to study the percentage of customers who are below a certain age.

Question 16

In general, a frequency distribution should have at least 8 class groups but no more than 20.

Accepted Answer

The optimal number of class groups in a frequency distribution depends on the nature and range of the data. While 8-20 is a common guideline, it is not a hard and fast rule. The number of class groups should be chosen in a way that accurately represents the data while still being easy to understand and interpret.

Question 17

TABLE 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.
 $$\begin{array} { l c c c r } 
& \text { For } & \text { Neutral } & \text { Aqainst } & \text { Totals } \
 \text { Female } & 38 & 54 & 12 & 104 \
\text { Male } & 12 & 36 & 48 & 96 \
 \text { Totals } & 50 & 90 & 60 & 200
\end{array}$$
-Referring to Table 2-12, construct a table of column percentages.

Accepted Answer

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

Question 18

TABLE 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.
 $$\begin{array} { l c c c r } 
& \text { For } & \text { Neutral } & \text { Aqainst } & \text { Totals } \
 \text { Female } & 38 & 54 & 12 & 104 \
\text { Male } & 12 & 36 & 48 & 96 \
 \text { Totals } & 50 & 90 & 60 & 200
\end{array}$$
-Referring to Table 2-12, of those neutral in the sample, ________ percent were males.

Accepted Answer

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

Question 19

TABLE 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.
 $$\begin{array} { l c c c r } 
& \text { For } & \text { Neutral } & \text { Aqainst } & \text { Totals } \
 \text { Female } & 38 & 54 & 12 & 104 \
\text { Male } & 12 & 36 & 48 & 96 \
 \text { Totals } & 50 & 90 & 60 & 200
\end{array}$$
-Referring to Table 2-12, of those for the plan in the sample, ________ percent were females.

Accepted Answer

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

Question 20

The percentage polygon is formed by having the lower boundary of each class represent the data in that class and then connecting the sequence of lower boundaries at their respective class percentages.

Accepted Answer

A percentage polygon is formed by plotting the midpoint of each class at its respective class percentage and then connecting these points with straight lines.

Quiz 2: Organizing and Visualizing Data

To evaluate two categorical variables at the same time, a ________ could be developed.

An ogive is a cumulative percentage polygon.

Apple Computer, Inc. collected information on the age of their customers. The youngest customer was 12 and the oldest was 72. To study the distribution of the age among its customers, it is best to use a pie chart.

If you wish to construct a graph of a relative frequency distribution, you would most likely construct an ogive first.

A polygon can be constructed from a bar chart.

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

A good choice for the number of class groups to use in constructing frequency distribution is to have at least 5 but no more than 15 class groups.

To determine the width of class interval, divide the number of class groups by the range of the data.

A side-by-side chart is two histograms plotted side-by-side.

Apple Computer, Inc. collected information on the age of their customers. The youngest customer was 12 and the oldest was 72. To study the distribution of the age among its customers, it can use a Pareto chart.

Relationships in a contingency table can be examined more fully if the frequencies are converted into ________.

Apple Computer, Inc. collected information on the age of their customers. The youngest customer was 12 and the oldest was 72. To study the distribution of the age among its customers, it can use a percentage polygon.

Apple Computer, Inc. collected information on the age of their customers. The youngest customer was 12 and the oldest was 72. To study the percentage of their customers who are below a certain age, it can use an ogive.

In general, a frequency distribution should have at least 8 class groups but no more than 20.

The percentage polygon is formed by having the lower boundary of each class represent the data in that class and then connecting the sequence of lower boundaries at their respective class percentages.