Unit 7 Flashcards
Use lines to:
Examine trends in deviations across interval units
Bullet graph background fill
Typically darker means worse performance in what graph
Bullet Graph in Tableau For Process Data
Shaded Regions Represent 60% and 80% of Target
Color Coding Performance bars is ok or not?
OK
Do not color code regions because why?
Too many colors means nothing stands out!
Few Recommends what with bullet graphs??
Black Bars with Colored Dots to Call out Critical Values
Use ____________for Multiple Entities
Bullet Graphs
DO NOT DO When everything is in color, nothing stands out
Dont do this with the colors on graphs for different units
Try comparing the three sites using the gauges. Ask the following questions:
How much better is the first and the third (in an intuitive sense and numerical sense).
Visually, the gauge does not convey this information well, especially when compared to the bullet/bar graph below.
Use ________graphs for direct comparison
Plot deviations can be used for what
Use __________ or ____________to Show Raw Numbers
Tool tips or labels
Use ____________ to Display the Same Data in Different Ways
Dashboards
use ______,______________,and________- to indicate that lower is better
SORTING, COLOR, and TEXT
But note that sorting ordinal or interval data may confuse the viewer.
Here we sort nominal data, so we are ok.
Ordinal and Interval can still be sorted, but be sure to communicate this to the viewer.
Indicating_________is Better in Bullet Graphs
LOWER
bullet graphs
[reverse background fill (from light to dark)]
[reverse background fill (from light to dark) and the X axis]
Different Measures with Reversed and Normal Scales
For the first two metrics lower is better, so the scales are reversed along with reference shading. Here, I’ve used the darker gray palette from Tableau to highlight good and bad reversal.
Evaluate Visualizations in Context: Note effect of reducing colors
Few Suggests Colored Dots to Highlight Critical Values
Tables: Add Deviation Information and Rank
We can display the same information in a table with the actual deviation shown. Good/bad direction is still not clear here
Use Labels to Clarify Meaning of Negative and Positive Numbers
Consider Reframing Metric to Higher is Better
*30 day Readmission Rate -> 30 day No Readmission Rate
*Or: Percentage of Patients Not Readmitted Within 30 days
Doing this is tricky, because certain metrics are commonly known and reframing can confuse people. Some metrics cannot be reframed, such as Length of Stay.
Deviations of Lower is Better Targets Are Confusing
Visualizing Deviations
*More difficult than it seems at first glance.
*Often no perfect solution.
*As usual, testing with users (even informally) is critical.
Which of the following statements are true about the color coding used in Graph A? Note that for Graph A all Target bars are green and all Units Using Process bars are Red. Select all that apply.
- Color is a redundant code in graph A, because the bars are also labeled with the name of the variable
- Graph A does not effectively use color to call attention to units who have not met their target, because the graph includes both green and red bars regardless of whether the target is met
- Graph A may be somewhat misleading because green typically means good and red bad, so at a glance a user might assume that all the green bars mean good performance and the red bars bad performance
You have a worksheet with four variables: Hospital, Units Using Process (the actual number of units converted to a new process), Target (the number of units that was set as a goal for converting to the new process), and Missed Target (True if a hospital missed–fell below–its target, otherwise False).
In Graph A above all Target bars are green and all Units Using Process bars are red. To create graph A, above, you must
drag Hospital to Columns
Measure Names to Columns
Measure Values to Rows
then color the graph by dragging Measure Names to Color
and finally filter Measure Names so that bars are shown only for Units Using Process and Target.