(There were a few slight correlations between breed and certain types of aggression, but these didn't pertain to stereotypical «bully breeds.») (onegreenplanet.org)
There is probably some (very) slight correlation between the existence of a large trade in one direction and the sign of the price change for some future trades. (money.stackexchange.com)
One of the things we've seen from all our data crunching is that G.P.A.'s are worthless as a criteria for hiring, and test scores are worthless — no correlation at all except for brand - new college grads, where there's a slight correlation. (nytimes.com)