Briefle words · Data & charts
Correlation
The degree to which two measures rise and fall together; strong correlation shows as dots hugging a diagonal, and it does not prove cause.
Say it to an AI
Show the relationship between September ad spend and signups across ten cities. Use a scatter plot, spend on x and signups on y, each dot labeled by city; mark the outlier Cork in a contrasting color so the correlation and the exception both read at once.
How an expert would brief the stronger version of “Ad spend vs. signups”.
See it
Try it as a puzzle →City-level marketing review in the growth dashboard of a bike-sharing operator.
Why: In B the dots climb from Leeds at $2.0k and 210 to Tallinn at $10.5k and 900, forming a near-straight line.
Related words
Room 2 · Choosing the chart
Learn “Correlation” in a five-minute lesson