I’m just back from a bit of a busman’s holiday in California, so US weather is on my mind. No anecdotes though – instead, here is an instructive example of the bad kind of data mining.
Suppose I wanted to convince people that temperature in the USA wasn’t going up, it was going down. What would I show? Let’s try yearly average temperature in the conterminous U.S., also known as the “lower 48 states” (I’ll just call it “USA”):
View original post 627 more words