MIDTERM Flashcards
What type of scale is Most Recent Year?
NOT nominal nor ordinal
MAYBE Interval or Ratio?
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?
Ordinal
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?
NOT
interval
ordinal
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?
A sequential palette
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?
A diverging palette
Based on the follow graph, indicate whether each is an analog or digital display element.
Progress labels to the left of the bars
Digital
Length of Bars
Analog
Light gray numbers to the right of each bar
Digital
Placing labels directly next and to the left of the bars is a good example of following which principle(s)? (Check all that apply)
NOT?
Shneiderman’s Mantra
Tufte’s Principle of Data-Ink
DEFINITELY NOT none of the above
first try Shneider and proximity WRONG
The labels to the left of the bars and the colors on the following graph are most accurately described as (check all that apply)
DEFINITELY NOT integral
NOT? Orthogonal Codes
Separable dimensions
try none
first try Redundant codes
Integral dimensions WRONG
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?
Deviation Analysis
Line graphs with time on the X axis and a linear scale on the Y axis allows us to accurately perceive rate of change.
False
When you connect to this data file in Tableau, what data type is Progress?
String
When you import this data into Tableau, Baseline Value’s data type is
Number (decimal)
When you import this data into Tableau, Baseline Year’s data type is
Number (whole)
When you import this data into Tableau, Unit’s data type is
String
What type of scale is Area?
Nominal
What type of scale is Baseline Value?
Ratio
What is the most appropriate color code for Area?
A set of very distinct medium intensity natural colors (black, blue, green, orange, purple, etc.)
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
ALL of ABOVE
The following visualization best represents which kind of analysis?
Part to Whole Analysis
The colors of the bars and the length of the bars on the following graph are most accurately described as (check all that apply)
Orthogonal Codes
Separable dimensions
Our most precise perception of different values of the Most Recent Value variable is afforded by encoding each value using…
The length of bars with common baselines
Graphs are always better than tables.
False
A graph is a visual mapping from data to a visual representation of that data. If we change the mapping, we change the graph.
True
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.
True
Axes and gridlines in graphs should be displayed just visibly enough to perform their role, but no more so.
True
