Generate noisy data around a perfectly flat reality and watch alarming dips appear out of nothing. The fewer days you look at, the wilder the story. More data, calmer story.
Interactive — signal vs. noisehit ‘new data’
same flat reality, fresh noise
We're crashing. ⌃ one bad day.
The worst day fell to 50 — about 0 below average. But the average barely moved: 50, basically flat. The dip was noise, not a trend.
Slide down to a handful of days and the average lurches with every run. Slide up and it settles. More data, calmer story.
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