Deck 3: Graphical Statistics

Question 1

Bar charts are useful when there are:

A) several discrete categories
B) data represented by similar numbers of cases
C) fifteen or more categories
D) none of the above

Answer 1

A

Question 2

Most people find it difficult to estimate the actual percentages represented by the various segments of a pie chart.

Answer 2

True

Question 3

Every graphical statistic has some common parts that need to be presented; they are

A) labels, line ticks, different colors
B) title, some type of scale, different colors,
C) title, labels, subtitles
D) labels, some type of scale, graph elements

Answer 3

D

Question 4

Discrete data

A) are rarely used
B) represent sensitive information and should be kept confidential
C) describe categories
D) a and b above

Question 5

Graphical statistics designed for discrete data include

A) line graphs
B) histograms
C) scatterplots
D) bar charts

Question 6

A key focus in graphical statistics is not to do something that would mislead people. This usually means eliminating distractions or distortions present in:

A) the relative size of the graph elements
B) the scale
C) over labeling
D) all of the above

Question 7

A type of graphical statistic that is designed for interval level data and has an appearance that almost looks like a bar chart is:

A) bargram
B) chartgram
C) scatterplot
D) histogram

Question 8

Pie charts can handle more categories than bar charts.

Question 9

Most statistical graphics

A) demonstrate the shape of a variable distribution
B) present relationships in pictures
C) are easier to use than nongraphical statistics
D) all of the above

Question 10

Graphical statistics designed for continuous data include

A) pie charts
B) bar charts
C) histograms
D) pictograms

Question 11

It is better to use a clustered bar chart than multiple bar charts.

Question 12

One of the best graphical statistics for locating extremes in the data is a

A) pie chart
B) scatterplot
C) histogram
D) line graph

Question 13

Which of the following make it difficult to interpret pie charts?

A) using two or more pie charts to compare data
B) using black and white markings instead of color
C) using labels in the pie segments
D) a and b above

Question 14

Pie charts are at their most useful when

A) there are multiple variables to be compared
B) there are few categories
C) there are proportions to be compared
D) the categories to be compared are in different colors

Question 15

A line graph is best used with which of the types of data below?

A) curvilinear
B) linear
C) discrete
D) continuous

Question 16

When comparing the data distribution of one variable by using another variable with two categories, it is best not to use a bar chart.

Question 17

Continuous data

A) are linear
B) have interval and ratio level measurement
C) work best in pie charts
D) are restricted to numbers with decimals

Question 18

Bar charts can show overall trends.

Question 19

Extremes are also referred to as

A) outliers
B) high scores
C) peak scores
D) all of the above

Question 20

Line graphs are primarily used when

A) the data are amenable to being presented in straight lines
B) comparisons are not needed because of the difficulty of interpreting multiple lines
C) there are two variables to show the relationship between them
D) a and c above

Question 21

Graphical statistics are part of what is generally called exploratory data anslysis.

Question 22

Graphical statistics enable an analyst to grasp the essential details of variable distributions.

Question 23

Line graphs are potentially the most useful of all graphs.

Question 24

The two variable line graph is probably one of the least commonly used graphical techniques in statistics.

Question 25

Scatterplots should never be used unless you can draw a straight line through the data.