HAC Healthcare Data Visualization & Dashboards 3

Question 1

Which dashboard refresh strategy is most appropriate for a real-time ED capacity management display?

Accepted Answer

Auto-refresh every 1–5 minutes

Answer

Monthly batch refresh

Answer

Manual refresh on user demand

Answer

Daily scheduled ETL refresh

Question 2

A healthcare organization wants to compare its 30-day readmission rate to national benchmarks on a dashboard. Which visualization approach best contextualizes the metric?

Accepted Answer

Adding a reference line representing the national average to a bar or line chart

Answer

Displaying the raw number only in a large font

Answer

Using a pie chart divided into readmitted and non-readmitted portions

Answer

Showing last month's value with an up or down arrow

Question 3

When building a Tableau or Power BI dashboard for clinical leadership, which data preparation step is critical before connecting the data source?

Accepted Answer

Defining a star schema or flat analytical data mart with pre-aggregated metrics

Answer

Converting all numeric fields to text for flexibility

Answer

Storing data in unstructured PDF reports for import

Answer

Keeping raw EHR transaction tables as the direct source

Question 4

Which statistical visualization is most useful for identifying outlier hospitals in a quality measure dataset while showing data spread?

Accepted Answer

Box plot (box-and-whisker plot)

Answer

Line chart

Answer

Stacked bar chart

Answer

Donut chart

Question 5

A dashboard development team is conducting user acceptance testing (UAT) for a new clinical dashboard. Which activity is most important during UAT?

Accepted Answer

Verifying that calculated metrics match source system values and that stakeholders can interpret the charts correctly

Answer

Optimizing the color palette for aesthetic appeal

Answer

Ensuring all charts use the same chart type for consistency

Answer

Confirming the dashboard loads in under 10 seconds on every device

Question 6

Which principle from information design discourages the use of decorative 3D effects, excessive gridlines, and background images in healthcare dashboards?

Accepted Answer

Both B and C

Answer

Cognitive load theory

Answer

Chartjunk elimination (Tufte)

Answer

Signal-to-noise minimization

Question 7

A health system's analytics team publishes an executive scorecard showing year-over-year changes in patient satisfaction scores. Which element should be included to help executives determine if a change is meaningful?

Accepted Answer

Statistical significance indicators or confidence intervals alongside the percentage change

Answer

A background watermark of the hospital logo

Answer

Animated transitions between months

Answer

A footnote listing the data vendor name