CBDA Data Visualization & Communication

Question 1

Which chart type is BEST suited for showing the distribution of a single continuous variable in a business data report?

Accepted Answer

Histogram

Answer

Pie chart

Answer

Stacked bar chart

Answer

Scatter plot

Question 2

When presenting findings to non-technical executives, a CBDA analyst should prioritize which of the following?

Accepted Answer

Clear visual narratives tied to business outcomes

Answer

Raw data tables with full detail

Answer

Technical jargon to demonstrate expertise

Answer

Complex statistical formulas

Question 3

A scatter plot with a trend line is MOST useful for communicating which type of relationship?

Accepted Answer

Correlation between two continuous variables

Answer

Part-to-whole proportions

Answer

Frequency of categorical values

Answer

Change over discrete time periods

Question 4

Which color practice is recommended when designing accessible data visualizations for business reports?

Accepted Answer

Use color-blind-safe palettes supplemented by labels or patterns

Answer

Use red and green to indicate good and bad

Answer

Rely solely on color to differentiate data series

Answer

Maximize the number of colors for visual interest

Question 5

What is 'data ink ratio' as defined by Edward Tufte and why does it matter for CBDA analysts?

Accepted Answer

The proportion of ink used to convey information versus decorative elements

Answer

The percentage of accurate data in a report

Answer

The ratio of charts to text on a dashboard

Answer

The compression rate of exported chart files

Question 6

A business analyst needs to compare sales performance across 12 months for five product lines. Which visualization is MOST appropriate?

Accepted Answer

A grouped or stacked line chart with one line per product

Answer

Five separate pie charts

Answer

A single bar chart summing all products

Answer

A table with raw monthly figures only