Question 1

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 graphical representation of a frequency distribution using percentages rather than actual values, and it can be used to study the distribution of any variable, including age.

Question 2

Histograms are used for numerical data while bar charts are suitable for categorical data.

Accepted Answer

This is correct. Histograms display the distribution of numerical data, while bar charts are used to display the frequency or distribution of categorical data.

Question 3

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 4

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 is a graph that shows the cumulative frequency distribution of a dataset. It is useful for studying the percentage of values that are below a certain point, such as the percentage of customers who are below a certain age.

Question 5

TABLE 2-13
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.
 
-Referring to Table 2-13, construct a table of column percentages.

Accepted Answer

The answer of TABLE 2-13
The table below contains the opinions...

Question 6

TABLE 2-13
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.
 
-Referring to Table 2-13, of those for the plan in the sample, ________ percent were females.

Accepted Answer

The answer of TABLE 2-13
The table below contains the opinions...

Question 7

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 better suited for showing how parts make up a whole, whereas age is a continuous variable that can be better displayed using a histogram or a frequency polygon.

Question 8

TABLE 2-13
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.
 
-Referring to Table 2-13, construct a table of row percentages.

Accepted Answer

The answer of TABLE 2-13
The table below contains the opinions...

Question 9

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 use a histogram or a frequency polygon. An ogive is a graph of a cumulative frequency distribution.

Question 10

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 in constructing frequency distribution usually provides a good balance between displaying detailed information and avoiding overly complicated graphs. However, the specific number of class groups to use may depend on the size of the dataset and the level of variability in the data.

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 display the frequency of occurrences of a set of categories in descending order of importance. It is not appropriate for displaying the distribution of numeric data such as age. A histogram or a box plot would be more appropriate for this purpose.

Question 12

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.

Question 13

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, divide the range of the data by the number of class groups.

Question 14

An ogive is a cumulative percentage polygon.

Accepted Answer

An ogive is a graph that represents the cumulative frequency or cumulative percentage distribution of a set of data. It is often depicted as a line graph, where the x-axis represents the values of the data and the y-axis represents the cumulative percentage or cumulative frequency. Therefore, an ogive is essentially a cumulative percentage polygon.

Question 15

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 16

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

Accepted Answer

The number of class groups in a frequency distribution can vary widely depending on the data set and the level of detail desired. There is no strict rule that limits the number of classes to a minimum of 8 or a maximum of 20. The choice often depends on the size of the data set and the purpose of the analysis.

Question 17

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 18

TABLE 2-13
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.
 
-Referring to Table 2-13, construct a table of total percentages.

Accepted Answer

The answer of TABLE 2-13
The table below contains the opinions...

Question 19

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 often used to represent the relative proportion of different categories within a dataset, and would be an appropriate way to visualize customer complaints sorted into specific categories.

Question 20

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...

Quiz 2: Presenting Data in Tables and Charts

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.

Histograms are used for numerical data while bar charts are suitable for categorical data.

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 percentage of their customers who are below a certain age, it can use an ogive.

TABLE 2-13 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. -Referring to Table 2-13, construct a table of column percentages.

TABLE 2-13 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. -Referring to Table 2-13, of those for the plan in the sample, ________ percent were females.

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.

TABLE 2-13 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. -Referring to Table 2-13, construct a table of row percentages.

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

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.

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.

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.

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

An ogive is a cumulative percentage polygon.

A polygon can be constructed from a bar chart.

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

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

TABLE 2-13 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. -Referring to Table 2-13, construct a table of total percentages.

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