(quibble with the analogy, > baseball batter will hit 4 out of every ten balls thrown at him if you're talking about batting .400, that's 4 per 10 "at-bats",

(quibble with the analogy, > baseball batter will hit 4 out of every ten balls thrown at him if you're talking about batting .400, that's 4 per 10 "at-bats", where each at-bat will on average consist of a multiple of balls thrown. )