Welcome to Margin of Error. Each month, I will be picking apart some number or statistical problem in the news or on my mind. I will draw on my own modest knowledge of econometrics — the statistics of economics, lately being applied to all kinds of problems — and interview the occasional expert. If you spot a questionable number that you’d like me to pick apart, send a tip to marginoferror (at) this (dot) org.
Thanks to midterms, university students across the country are too busy to read this. That’s probably just as well, because I’m here to share a story that might upset them — the degrees they are cramming for probably aren’t worth as much as they think.




