12K views · 194 reactions | The meanest thing you can say to a...

rayon on Instagram: "Regression to the mean is a statistical phenomenon where extreme observations tend to be followed by more typical ones purely due to randomness. It isn’t a mystical force pulling values back to “normal,” but a mathematical consequence of imperfect correlation. Whenever two variables are related but not perfectly—like a student’s performance from one exam to the next, or an athlete’s performance across games—extreme outcomes occur partly because of stable skill factors and pa