Briefle words · Data & charts
Logarithmic scale
An axis where each equal step multiplies the value by the same factor, so a constant growth rate appears as a straight line.
Say it to an AI
Line chart of registered learners per year, 2019 to 2026, with a takeaway title about tripling each year. Because the values span three orders of magnitude (1.2k to 2.1M), use a logarithmic scale with ticks at 1k, 10k, 100k and 1M so the early years and the growth rate are both readable.
How an expert would brief the stronger version of “Learner growth chart”.
See it
Try it as a puzzle →Growth-over-time chart in the investor update of a language-learning app.
Why: A spaces 1k, 10k, 100k and 1M evenly up the axis; the 2019 to 2022 points are clearly visible instead of being crushed near zero.
Related words
Room 3 · Axes & scales
Learn “Logarithmic scale” in a five-minute lesson