Glossary · Phase 3 · Machine learning

Rolling average

Also written: rolling mean, rolling window, rolling windows

Each point replaced by the average of the last few, which smooths out noise so the trend shows.

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resample changes the time step, rolling smooths without changing it, and shift moves a series in time so you can compare it with another.

Time series with pandas · Resample, smooth, compare across years, and test whether one series leads another. About 45 minutes.

seasonality: A pattern that repeats at the same time every year (or week, or day), like more shoe sales every summer.
time series: A measurement taken again and again over time, like daily orders or monthly visits.

Teach a small one to write, right in your browser. It takes about 20 seconds and needs no account.