Before and after baseline
Paste daily players for the days before a change and the days after it. You get both averages, the change, and whether the difference is bigger than the normal day-to-day spread.
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How it works
Each side is averaged, and the change compares the after average with the before average.
The spread is the standard deviation of the days before. A difference inside that spread is hard to tell apart from normal variation.
Keep in mind
- A before and after comparison is a clue, not proof. Events, ads and holidays overlap with changes.
- Use equal windows of complete days, like 7 and 7, so each side has every weekday once.