Glossary of Statistical Terms - Statistics at UC Berkeley | Department of Statistics
F Factorial. For an integer k that is greater than or equal to 1, k! (pronounced "k factorial") is k×(k−1)×(k−2)× …×1. By convention, 0! = 1. There are k! ways of ordering k distinct objects. For example, 9! is the number of batting orders of 9 baseball p...