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

Tufte coined 'chartjunk' to describe unnecessary decorative elements—3D effects, excessive gridlines, hatching, and ornamental graphics—that distract from the actual data.

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

Waterfall charts display sequential additions and subtractions to a starting value, making them ideal for financial analysis, variance decomposition, and bridge analyses.

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

Logarithmic scales compress wide value ranges, making multiplicative (percentage) changes visually equal and preventing large values from dominating the chart.

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

Operational reports are pre-defined, regularly scheduled reports (daily, weekly, monthly) that automatically pull current data to track standard business metrics and processes.

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

The 'so what?' principle ensures that every piece of data presented is connected to a relevant business implication or decision, preventing information overload without purpose.

(CAP) Certified Analytics Professional Practice Test

(CAP) Certified Analytics Professional Practice Test

CAP Data Visualization & Reporting 3