multinomial |
(function for equations) |
Usage: |
multinomial (n1, n2, ... nn) |
Definition: |
(n1 + n2 + ... nn)! / (n1! * n2! * ... nn!) |
Required: |
ni ⋝ 0 ni are integers |
Returns the number of ways an (n1+n2+…nn) sized set of distinct elements can be partitioned into sets of size n1, n2, … nn.
If partitioning into only two sets, this is the same as binomial.
The probability distribution based on this function is the multinomial distribution.