Bubble chart 0102030405060Acres100150200Crates per acre, 2025ApplesCherriesPeachesPearsPlumsFruit02,0004,0006,0008,00010,00012,000Crates Size each dot in a scatter by a third measure and it becomes a bubble chart. Scale circles by area, never diameter, and expect readers to underestimate the big ones anyway. Use size for context, not precise comparison. Karsten judged circles and squares sized by area harshly: “Both circle and square require the more or less tedious computation of square roots and repay this labor with inaccurate and ambiguous results” (Karl G. Karsten, Charts and Graphs, 1923, pp. 79–80). Also called: bubble plot From: Scatter plot Data as of 02:45 UTC on 21 Oct 2026 made withdbt Charts