Data Visualisation Lab — Show, Do Not Decorate

Redesign five bad Helio Verde quarterly-review charts using Tufte data-ink discipline, Cleveland perceptual hierarchy, Munzner task taxonomy, and modern colourblind-safe craft. Score every redesign against a six-item discipline checklist (chart-type fit, data-ink, perceptual encoding, colour accessibility, axis honesty, labelling completeness). Discover that the chart is not the deliverable — the argument is.