CAP Data Visualization & Reporting 3

Question 1

What is 'chartjunk' as described by Edward Tufte?

Accepted Answer

Visual elements that add clutter without conveying additional information

Answer

Incorrect data displayed in a chart due to data quality issues

Answer

Charts embedded in documents that are never viewed by end users

Answer

Duplicate charts that show the same data in different formats

Question 2

A waterfall chart is most appropriate for showing which type of analytical information?

Accepted Answer

How an initial value is incrementally increased or decreased to reach a final value

Answer

Geographic distribution of sales by region

Answer

Correlation between two continuous variables across time

Answer

Frequency distribution of a single categorical variable

Question 3

When should a logarithmic scale be used on a chart axis?

Accepted Answer

When the data spans multiple orders of magnitude and multiplicative change is meaningful

Answer

When data values are negative and need to be normalized

Answer

When the audience is technically sophisticated enough to interpret it

Answer

When the number of data categories exceeds 20

Question 4

Which type of report is typically automated, scheduled to run at regular intervals, and requires minimal human intervention to produce?

Accepted Answer

Operational report

Answer

Ad hoc report

Answer

Self-service report

Answer

Exploratory data analysis report

Question 5

In storytelling with data, what does the 'so what?' principle refer to?

Accepted Answer

Ensuring every visualization is clearly linked to a decision or action the audience should take

Answer

Ending every presentation with an open-ended question for the audience

Answer

Summarizing all statistical findings at the end of a report

Answer

Using rhetorical questions as chart titles to engage viewers

Question 6

Which visualization technique is most appropriate for displaying geographic distribution of data across US states?

Accepted Answer

Choropleth map

Answer

Bubble chart

Answer

Parallel coordinates plot

Answer

Funnel chart

Question 7

What is the primary purpose of using small multiples (trellis charts) in data visualization?

Accepted Answer

To compare the same visualization across multiple subgroups or time periods side by side

Answer

To display a single complex dataset using multiple chart types simultaneously

Answer

To provide a zoomed-in view of outliers detected in the main chart

Answer

To reduce the file size of dashboards containing many data points