Math & reasoning · Official example

Why Averaging Two Averages Can Be Wrong

A small group averages ninety, and a large group averages sixty. Is the combined average seventy-five? Weight each group by its size. A plain average of averages only works when their weights are equa

Author

Ultromotion Studio

Published

October 4, 2026

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3 scenes

Format

1080×1080 · 30 fps

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