How do you choose the right chart to present a finding to senior leaders?

What the interviewer wants to hear

• Start from the one message the chart must show
• Match the chart type to the comparison: trend, ranking, distribution, part of whole
• Remove clutter and label directly
• Use a headline title that states the takeaway
• Show uncertainty or context where it matters

Model answer

I start with the single message I want the leader to remember, then pick the chart that makes that comparison obvious. A trend over time is a line chart, a ranking across categories is a sorted bar chart, a distribution is a histogram or box plot, and I avoid pie charts unless there are only two or three parts. Then I strip clutter: no 3D, few gridlines, direct labels instead of legends, and one highlight colour for the thing that matters. The title states the takeaway, such as "Churn doubled in the basic plan after the price change", rather than "Churn by plan". I add context like a target line or last year for comparison, and show uncertainty if the numbers are estimates. Finally I check that someone can understand it in ten seconds without me explaining it.

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