the.com/anscombe
four datasets, identical stats, wildly different shapes — proof that numbers lie unless you look.
means anscombe's quartet is a set of four x-y data groups that share the same mean, variance, correlation, and regression line, yet look completely different when plotted.
from created in 1973 by statistician francis anscombe to attack the habit of trusting summary statistics without ever graphing the data first.
published1973, in the american statistician journal
same statsidentical mean, variance, and r-squared across all four
one shapecontains a clear outlier hiding in plain sight
legacyinspired the datasaurus dozen, a cheekier modern sequel