Deck 3: Graphical Descriptive Methods Nominal Data

Question 1

Which of the following statements about pie charts is false?

Answer 1

A

Question 2

Which of the following statements is true?

Answer 2

D

Question 3

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.

Answer 3

a. b. More than half of these people moved for housing reasons. More than one quarter of these people moved for family reasons.

Question 4

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.

Question 5

Construct a pie chart for the sample of 200 business school graduates is shown in the following table.

Question 6

Which of the following best describes a bar chart?

Question 7

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: Create a bar chart to display the political party affiliation in the Queensland electorate. Write a short sentence to describe the political affiliation.

Question 8

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

Question 9

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

Question 10

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

Question 11

Which of the following best describes a component bar chart?

Question 12

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.

Question 13

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. 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.

Question 14

Which of the following is a graphical technique used to present nominal (categorical) data?

Question 15

Which of the following statements is true?

Question 16

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

Question 17

Which of the following applies to graphical techniques to describe ordinal data? S

Question 18

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.

Question 19

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