My Favorite Paradox
https://www.forrestthewoods.com/blog/my_favorite_paradox/ [www.forrestthewoods.com]
2019-02-28 21:10
Here is Simpson’s Paradox once again.
Trends which appear in groups of data may disappear or reverse when the groups are combined.
I love this because every layer you peel off can invert your conclusion. At first glance B is better. Look deeper and A is better. Look deeper still and B may be better again.
source: L