MIDTERM 2

Question 1

When you connect to this data file in Tableau, what data type is Progress?

Answer 1

String

Question 2

When you import this data into Tableau, Baseline Value’s data type is

Answer 2

Number (dec)

Question 3

When you import this data into Tableau, Baseline Year’s data type is

Answer 3

Number (whole)

Question 4

When you import this data into Tableau, Unit’s data type is

Answer 4

String

Question 5

What type of scale is Area?

Answer 5

Nominal

Question 6

What type of scale is Baseline Value?

Answer 6

Ratio

Question 7

What type of scale is Most Recent Year?

Answer 7

Interval ?
Ratio or none

Question 8

What type of scale is Progress if you consider the value “Baseline data only” to be the worst value and “Target Met” to be the best?

Answer 8

Ordinal

Question 9

You add a new variable called “Years Since Baseline” which is defined as [Most Recent Year] - [Baseline Year]. What scale type is Years Since Baseline?

Answer 9

Ratio

Question 10

What is the most appropriate color code for Area?

Answer 10

A set of very distinct medium intensity natural colors (black, blue, green, orange, purple, etc.)

Question 11

Suppose you create a bar graph for the Most Recent Value of all Metrics that are measured using a percentage. You would like to use a dual code to color code each bar based on its value (without respect to how far the value is from its target). What is the best palette for this?

Answer 11

A sequential palette

Question 12

If “Baseline data only” is the worse value of the variable Progress and “Target Met” the best, what is the most appropriate color code for Progress?

Answer 12

A diverging palette

Question 13

Based on the follow graph, indicate whether each is an analog or digital display element.

Answer 13

Progress labels to the left of the bars
Digital
Length of Bars
Analog
Light gray numbers to the right of each bar
Digital

Question 14

Which of the following factors are important to consider when trying to select the most appropriate visual display of data?
The users’ needs
Characteristics of the data
How we perceive visual elements
Prior user knowledge and familiarity with graph types, the data, and their tasks

Answer 14

ALL of ABOVE

Question 15

The following visualization best represents which kind of analysis?

Answer 15

Part to Whole Analysis

Question 16

Placing labels directly next and to the left of the bars is a good example of following which principle(s)? (Check all that apply)

Answer 16

X Shneiderman’s Mantra
X Tufte’s Principle of Data-Ink Ratio
?The Proximity Compatibility Principle
X Using pre-attentive features

Question 17

The labels to the left of the bars and the colors on the following graph are most accurately described as

Answer 17

NOT integral

Orthogonal Codes
Redundant codes
? Separable dimensions
None of the above

Question 18

The colors of the bars and the length of the bars on the following graph are most accurately described as (check all that apply)

Answer 18

Orthogonal Codes
Separable dimensions

Question 19

Our most precise perception of different values of the Most Recent Value variable is afforded by encoding each value using…

Answer 19

The length of bars with common baselines

Question 20

Graphs are always better than tables.

Answer 20

False

Question 21

Suppose you graph only the LHI metrics where “higher is better”, but instead of graphing the most recent value, you want to graph how far the value is from the target value. This is an example of what kind of analysis?

Answer 21

Deviation Analysis

Question 22

Line graphs with time on the X axis and a linear scale on the Y axis allows us to accurately perceive rate of change.

Answer 22

False

Question 23

A graph is a visual mapping from data to a visual representation of that data. If we change the mapping, we change the graph.

Answer 23

True

Question 24

To follow Shneiderman’s Mantra, you should design a visualization to provide the big picture first, but still allow the user to drill in to see details and manipulate the visualization by filtering and zooming.

Answer 24

True

Question 25

Axes and gridlines in graphs should be displayed just visibly enough to perform their role, but no more so.

Answer 25

True