trinomial distribution

trinomial distribution

[trī′nō·mē·əl ‚di·strə·byü·shən]
(statistics)
A multinomial distribution in which there are three distinct outcomes.
References in periodicals archive ?
(iii) for the trinomial distribution, Cochran [4] rules require all expected frequencies to be at least five.
They then calculated from the trinomial distribution the magnitude of k required to have a 0.95 probability of correctly inferring the species tree for various values of T.