Glossary · Phase 0 · Tools
Histogram
A chart that sorts values into ranges and shows how many fall in each, so you can see which values are common.
Try it now
The same 18 months of trail-shoe orders. Switch to bars and turn off the zero baseline: small differences suddenly look huge. Then hide the last month and the false collapse disappears.
Learn it properly
Charts with Matplotlib · Line, bar, scatter, histogram and box plots, labeled and honest. About 40 minutes.
Other terms from the same lesson
- box plot: A chart of a group's spread: a box around the middle half of the values, a line at the median, and dots for unusual values.
- log scale: An axis where each step is ten times the last, so values from tiny to huge all fit and equal steps mean equal percentage growth.
- small multiples: A grid of small, simple charts, one per group, drawn on the same scale so they're easy to compare.
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