Question 1

Which of the following best describes a bar chart? $\begin{array}{|l|l|}
\hline  A&\text { A chart in which vertical bars represent data in different categories.}\
\hline  B&\text {A circle subdivided into sectors representing data in different categories }\
\hline  C&\text { A chart in which vertical bars of unequal widths are usually used.}\
\hline  D&\text { A chart in which vertical bars usually have no gaps between them.}\
\hline 
\end{array}$

Accepted Answer

A

Question 2

When a comparison of two breakdowns is desired, component bar charts offer a good alternative to using two pie charts.

Accepted Answer

Component bar charts allow for easier comparison between two breakdowns by showing the values for each component side by side, whereas pie charts can be difficult to compare accurately.

Question 3

Which of the following statements is true? $\begin{array}{|l|l|}
\hline  A&\text {All calculations are permitted on nominal (categorical) data. }\
\hline  B&\text {A contingency table lists the counts of each combination of the values }\
&\text {of the two variables.}\
\hline  C&\text { Bivariate refers to the distribution of one variable.}\
\hline  D&\text {A contingency table cannot be based on two nominal variables. }\
\hline 
\end{array}$

Accepted Answer

B

Question 4

According to the Housing Mobility section of the General Social Survey, Victoria, 2006 (ABS, Catalogue Number: 4159.2.55.001), about 1493 thousand people aged 18 years or over moved in the last five years. Of these people, 758.4 thousand moved for housing reasons, 170.2 thousand moved for employment reasons, 398.6 thousand moved for family reasons and 167.2 thousand moved for other reasons.
a. Construct a pie chart.
b. Interpret your pie chart.

Accepted Answer

The answer of According to the Housing Mobility section of...

Question 5

An automobile insurance agent believes that company A is more reliable than company
B. The scale of measurement that this information represents is the ordinal scale. This could be displayed with a pie chart.

Accepted Answer

The ordinal scale is used for ranking or ordering items, such as reliability in this case. A pie chart can display ordinal data by showing the proportion of each category, though it is more common for nominal data.

Question 6

Construct a pie chart for the sample of 200 business school graduates is shown in the following table. $$\begin{array} { | l | c | } 
\hline \text { Major of graduates } & \text { Number of graduates } \
\hline \text { Accounting } & 58 \
\hline \text { Finance } & 42 \
\hline \text { Management } & 38 \
\hline \text { Marketing } & 52 \
\hline \text { Other } & 10 \
\hline
\end{array}$$

Accepted Answer

The answer of Construct a pie chart for the sample...

Question 7

Which of the following applies to graphical techniques to describe ordinal data? $\begin{array}{|l|l|}
\hline  A&\text {We may use bar charts or pie charts. }\
\hline  B&\text {The bars in a bar chart should be arranged in ascending (or descending) ordinal values. }\
\hline  C&\text { In a pie chart, the wedges may be arranged clockwise in ascending (or descending) order.}\
\hline  D&\text { All of these choices are correct.}\
\hline 
\end{array}$

Accepted Answer

The answer of Which of the following applies to graphical...

Question 8

Voters participating in a recent election exit poll in a Queensland electorate were asked to state their political party affiliation as well as their gender. Coding the data 1 for Coalition, 2 for minor parties and 3 for Labor, and F for female, M for male.

$$\begin{array} { | l | l | l | l | l | l | l | l | l | } 
\hline 3 \mathrm { M } & 1 \mathrm {~F} & 2 \mathrm {~F} & 3 \mathrm { M } & 1 \mathrm {~F} & 3 \mathrm { M } & 3 \mathrm {~F} & 2 \mathrm {~F} & 1 \mathrm {~F} \
\hline 3 \mathrm {~F} & 3 \mathrm { M } & 2 \mathrm {~F} & 1 \mathrm { M } & 1 \mathrm { M } & 3 \mathrm { M } & 2 \mathrm {~F} & 3 \mathrm { M } & 1 \mathrm { M } \
\hline 3 \mathrm { M } & 2 \mathrm {~F} & 3 \mathrm {~F} & 2 \mathrm {~F} & 1 \mathrm {~F} & 1 \mathrm {~F} & 3 \mathrm { M } & & \
\hline
\end{array}$$ a. Create a cross classification table of gender by political affiliation.
b. Create a component bar chart, for each gender.
c. Interpret your component bar chart by gender.

Accepted Answer

The answer of Voters participating in a recent election exit...

Question 9

The wedges of a pie chart, if displayed as proportions, will sum to 1 or 100%.

Accepted Answer

This statement is true. The wedges of a pie chart represent the proportion of the whole and therefore must add up to the entire amount, which is equivalent to 1 or 100%.

Question 10

If the focus is to compare the size or frequency of various categories, a bar chart may be appropriate. Pie charts are effective whenever the objective is to display the components of a whole entity in a manner that indicates their relative sizes.

Accepted Answer

This statement accurately reflects the appropriate use of bar charts and pie charts.

Question 11

Which of the following is a graphical technique used to present nominal (categorical) data? $\begin{array}{|l|l|}
\hline  A&\text { Bar chart.}\
\hline  B&\text {Fie chart. }\
\hline  C&\text {A bar chart and/or a pie chart. }\
\hline  D&\text { None of these choices are correct.}\
\hline 
\end{array}$

Accepted Answer

The answer of Which of the following is a graphical...

Question 12

Voters participating in a recent election exit poll in a Queensland electorate were asked to state their political party affiliation. Coding the data 1 for Coalition, 2 for minor parties and 3 for Labor, the data collected were as follows: $$\begin{array} { | l | l | l | l | l | l | l | l | l | } 
\hline 3 & 1 & 2 & 3 & 1 & 3 & 3 & 2 & 1 \
\hline 3 & 3 & 2 & 1 & 1 & 3 & 2 & 3 & 1 \
\hline 3 & 2 & 3 & 2 & 1 & 1 & 3 & & \
\hline
\end{array}$$ Create a bar chart to display the political party affiliation in the Queensland electorate. Write a short sentence to describe the political affiliation.

Accepted Answer

The answer of Voters participating in a recent election exit...

Question 13

Which of the following statements about pie charts is false? $\begin{array}{|l|l|}
\hline  A&\text {Fie charts can only be used for nominal data. }\
\hline  B&\text { Fie chats are usually used to display the relative sizes of categories for qualitative data.}\
\hline  C&\text { Fie charts always have the shape of a circle.}\
\hline  D&\text {The area of each slice of a pie chart is proportional to the rel ative frequency of the }\
&\text {corresponding category. }\
\hline 
\end{array}$

Accepted Answer

The answer of Which of the following statements about pie...

Question 14

Given the following five categories and the number of times each occurs, construct a pie chart and a bar chart.

$$\begin{array} { | l | c | c | c | c | c | } 
\hline \text { Category } & 1 & 2 & 3 & 4 & 5 \
\hline \text { Frequency } & 17 & 29 & 40 & 24 & 20 \
\hline
\end{array}$$

Accepted Answer

The answer of Given the following five categories and the...

Question 15

A pie chart is always preferable to a bar chart, when describing a nominal variable.

Accepted Answer

A pie chart is not always preferable for describing a nominal variable; the choice between a pie chart and a bar chart depends on the specific context and the clarity of the information being presented. Bar charts can be more effective for comparing individual categories, especially when there are many categories or when the differences between categories are small.

Question 16

A bar chart is a graphical display of a nominal (categorical) variable. The reason for the gaps between the bars is to emphasise that the bars can be placed in any order as the variable is categorical.

Accepted Answer

The statement is true. A bar chart is used to display categorical data, and the spaces between the bars emphasize that the categories are distinct and cannot be ordered in a meaningful way.

Question 17

Which of the following statements is true? $\begin{array}{|l|l|}
\hline  A&\text { A contingency table may also be called a cross classi fication table }\
\hline  B&\text { A contingency table is used to describe two nominal variables.}\
\hline  C&\text { A bar chart may be used as a graphical display of a contingency table.}\
\hline  D&\text {All of these choices are correct. }\
\hline 
\end{array}$

Accepted Answer

The answer of Which of the following statements is true?...

Question 18

Car buyers were asked by a car dealer to rate their level of satisfaction with the service they had
received. The four ratings were Excellent (E), Good (G), Satisfactory (S) and Unsatisfactory (U). The
following data were obtained.
a. Create a bar chart of the level of satisfaction with the service.
b. Create a pie chart of the level of satisfaction with the service. $$\begin{array} { | r | r | r | r | r | r | r | r | r | r | } 
\hline \mathrm { S } & \mathrm { E } & \mathrm { E } & \mathrm { E } & \mathrm { U } & \mathrm { E } & \mathrm { G } & \mathrm { S } & \mathrm { E } & \mathrm { U } \
\hline \mathrm { U } & \mathrm { G } & \mathrm { E } & \mathrm { G } & \mathrm { S } & \mathrm { E } & \mathrm { G } & \mathrm { G } & \mathrm { E } & \mathrm { G } \
\hline \mathrm { S } & \mathrm { E } & \mathrm { E } & \mathrm { S } & \mathrm { U } & \mathrm { G } & \mathrm { G } & \mathrm { E } & \mathrm { E } & \mathrm { S } \
\hline \mathrm { S } & \mathrm { U } & \mathrm { E } & \mathrm { U } & \mathrm { S } & \mathrm { G } & \mathrm { G } & \mathrm { E } & \mathrm { U } & \mathrm { S } \
\hline
\end{array}$$

Accepted Answer

The answer of Car buyers were asked by a car...

Question 19

Identify the type of data for which each of the following graphs is appropriate.
a. Pie chart.
b. Bar chart.

Accepted Answer

The answer of Identify the type of data for which...

Question 20

Which of the following best describes a component bar chart? $\begin{array}{|l|l|}
\hline  A&\text { A component bar chart represents all categories within a single bar.}\
\hline  B&\text { The height of each component is proportional to the frequency of the}\
&\text { category that it represents.}\
\hline  C&\text { Component bar charts may be used as a comparison of two or more breakdowns}\
&\text { as an alternative to using two pie charts.}\
\hline  D&\text {All of these choices are correct. }\
\hline 
\end{array}$

Accepted Answer

The answer of Which of the following best describes a...

Quiz 3: Graphical Descriptive Methods Nominal Data

When a comparison of two breakdowns is desired, component bar charts offer a good alternative to using two pie charts.

An automobile insurance agent believes that company A is more reliable than company B. The scale of measurement that this information represents is the ordinal scale. This could be displayed with a pie chart.

The wedges of a pie chart, if displayed as proportions, will sum to 1 or 100%.

If the focus is to compare the size or frequency of various categories, a bar chart may be appropriate. Pie charts are effective whenever the objective is to display the components of a whole entity in a manner that indicates their relative sizes.

Which of the following is a graphical technique used to present nominal (categorical) data? $\begin{array}{|l|l|}\hline A&\text { Bar chart.}\\\hline B&\text {Fie chart. }\\\hline C&\text {A bar chart and/or a pie chart. }\\\hline D&\text { None of these choices are correct.}\\\hline \end{array}$

Given the following five categories and the number of times each occurs, construct a pie chart and a bar chart. $\begin{array} { | l | c | c | c | c | c | } \hline \text { Category } & 1 & 2 & 3 & 4 & 5 \\\hline \text { Frequency } & 17 & 29 & 40 & 24 & 20 \\\hline\end{array}$

A pie chart is always preferable to a bar chart, when describing a nominal variable.

A bar chart is a graphical display of a nominal (categorical) variable. The reason for the gaps between the bars is to emphasise that the bars can be placed in any order as the variable is categorical.

Identify the type of data for which each of the following graphs is appropriate. a. Pie chart. b. Bar chart.