Data Visualization Chart Types and Selection 2

Question 1

Which chart type is ideal for showing the flow of quantities between different stages or categories?

Accepted Answer

Sankey diagram

Answer

Sankey diagrams use flow widths proportional to quantity to show how values move between stages.

Question 2

A box plot (box-and-whisker plot) displays which statistical measures?

Accepted Answer

Median, quartiles, and outliers

Answer

Box plots show the median, interquartile range (Q1–Q3), whiskers for range, and individual outliers.

Question 3

Which chart is best for comparing multiple quantitative variables across several categories simultaneously?

Accepted Answer

Radar/spider chart

Answer

Radar charts plot multiple variables on axes radiating from a center, allowing multi-dimensional comparison.

Question 4

What is the primary purpose of a waterfall chart?

Accepted Answer

Display cumulative effect of sequential positive and negative values

Answer

Waterfall charts visualize how an initial value is affected by a series of positive and negative incremental changes.

Question 5

Which visualization should you use to show progress toward a goal or compare a measure to a target?

Accepted Answer

Both are appropriate

Answer

Both gauge charts and bullet charts effectively show progress toward a target, though bullet charts are generally preferred for their efficiency.

Data Visualization Practice Test