A three sigma limit is a statistical calculation that refers to data within three standard deviations from a mean. It shows ...

The probability distribution is a statistical calculation that describes ... events that have only two outcomes—but you don't need even (50/50) odds. The binomial distribution below plots ...

Lopsided Curve The Tracy-Widom distribution is an asymmetrical statistical bump ... But there could be many more than three, perhaps even an infinite number, of Tracy-Widom universality classes.