Yesterday on the radio I heard the phrase ‘statistically significant’ twice (one on a discussion about crime and other about cancer). We all think we know what it is: If all the birds overhead poo on you simultaneously, you know, it cannot be a random event. It is surely a statistically signifcant event full of practical consequences ordered by an angry diety to dirty your atheistic bald head (alright, my atheistic bald head). Nevertheless, if you aren’t a scientist or a statistician, a short readup may help, because, it ain’t so simple. The wikipedia page is not laymanish (if you are an expert, why not create a page that’s simpler). I liked this answer, which is a good starting point.