Briefle words · Data & charts
Time series
A set of values measured at successive, evenly spaced points in time, usually drawn as a line.
Say it to an AI
Line chart of daily signups for the last two weeks as a time series with three gridlines. Add one annotation at the Oct 9 spike, a marker plus 'Oct 9: TV campaign aired, 410 signups', so the anomaly is explained on the chart itself; no other labels needed.
How an expert would brief the stronger version of “Daily signups chart”.
See it
Try it as a puzzle →Acquisition chart on the growth dashboard of a language-learning app.
Why: Both charts plot fourteen daily counts from Sep 28 to Oct 11 as one blue line.
More ways experts use it
Chart of paying subscribers at month end, October 2024 to September 2026. This is a 24-point time series, so use a line chart, not bars: one line, a dot on the last value and three gridlines at 0, 50k and 100k. Takeaway title: 'Subscribers doubled in two years'.
Subscriber growth chart · Data & charts
Related words
Room 1 · Essentials
Learn “Time series” in a five-minute lesson