Data Visualization Chart Types and Selection 2 — Questions and Answers
Question 1: Which chart type is ideal for showing the flow of quantities between different stages or categories?
- Sankey diagram (Correct answer)
- Funnel chart
- Waterfall chart
- Stacked bar chart
Correct answer: Sankey diagram
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?
- Mean, mode, range
- Median, quartiles, and outliers (Correct answer)
- Mean, variance, standard deviation
- Minimum, maximum, average
Correct answer: Median, quartiles, and outliers
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?
- Bullet chart
- Radar/spider chart (Correct answer)
- Gantt chart
- Marimekko chart
Correct answer: Radar/spider chart
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?
- Show geographic data distribution
- Display cumulative effect of sequential positive and negative values (Correct answer)
- Compare parts of a whole
- Track project timelines
Correct answer: Display cumulative effect of sequential positive and negative values
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?
- Gauge chart
- Bullet chart
- Both are appropriate (Correct answer)
- Neither is appropriate
Correct answer: Both are appropriate
Both gauge charts and bullet charts effectively show progress toward a target, though bullet charts are generally preferred for their efficiency.
Question 6: What type of chart is most suitable for displaying data across geographic regions?
- Choropleth map (Correct answer)
- Scatter plot
- Heatmap
- Bubble chart
Correct answer: Choropleth map
Choropleth maps use color intensity to represent data values across geographic areas or regions.
Data Visualization Chart Types and Selection 2
Which chart type is ideal for showing the flow of quantities between different stages or categories?