When is a pie chart an appropriate visualization?
Tests your grasp of data viz principles for part-to-whole data. A good answer defines this use case (e.g., market share), then lists pitfalls like too many slices or comparing multiple pies. A red flag is defending pie charts for complex data.
This tests your judgment in data visualization, specifically your ability to clearly communicate part-to-whole relationships. A strong answer defines the single use case (static proportions, e.g., browser market share), then details pitfalls like using >7 slices (use a bar chart) or comparing two pies (use a stacked bar chart). The primary red flag is defending pie charts for complex data comparisons or failing to suggest a superior alternative when one is clearly needed.
Read the original → Wikipedia: Pie chart
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