In Other Words, Your Sample Is Biased

One thing Bill James pointed out many years ago, is that the people who privilege intuition over statistics often end up using statistics to make their points. They just don’t use statistics systematically. Instead of looking carefully at offensive contributions, they’ll say that someone hit .300 once and somebody else notched 100 RBI.

Andrew Gelman, "Note to the 'quals': Instead of competing with the 'quants,' take advantage of quantitive understanding to do better qualitative reporting and analysis"