Scatter plot in 1880: Shared baseline
One annotation sentence. Date the source. Keep Scatter plot with “Shared baseline” and 1880 from 1880. Variant 1 of Scatter plot (XY plot). Same encoding, different layout.
John Herschel plotted orbits; Galton’s 1880s regressions made the form famous position of points on two quantitative axes Yes if one claim is visible at a glance in Meta, Google and retail print; otherwise link to a full figure. Yes for lab reports and poster boards if axes, units and a source line are present.
Excel or Google Sheets or PowerPoint; export SVG/PDF. Do not rely on hue alone. Label directly and check greyscale. Scatter plot: honour position of points on two quantitative axes, and switch when one axis is not quantitative, or time is the real story. The core mark of Scatter plot is position of points on two quantitative axes.
correlation, outliers and clusters in two measures The eye compares length and position more accurately than area. PowerPoint, Excel or Google Sheets and Meta, Google and retail print share the same geometry. Decoration rarely persuades; it slows reading. Perspective distortion wrecks comparison. Keep it flat.
Keep axis, unit, and year. If “Shared baseline” is the axis, the figure is 1880 and the year is 1880. Keep Scatter plot with “Shared baseline” and 1880 from 1880. 18801880
Figures to keep
- Year of the chart
- 1880
- Axis figure
- 1880
- Chart
- Scatter plot
- How to read it
- Shared baseline
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