A generalization of the binomial distribution to situations in which r outcomes can occur on each of n trials, where r > 2. Specifically the distribution is given by 𝑃(𝑛1, 𝑛2,. . . . , 𝑛𝑟) = 𝑛! 𝑛1! 𝑛2! . . . 𝑛𝑟! 𝑝1𝑛1𝑝2𝑛2. . . 𝑝𝑟𝑛𝑟