The truth about binomial distribution

In short, CC is right, the others and the references to “multinomial” in the papers are wrong.

A Head/Tail distribution is a “Bernoulli distribution”.
A “Binomial distribution” counts the occurrences (e.g. of Head) of successive Bernoulli outcomes.

Thus a multinomial is like a binomial, counting outcomes, but with more possible outcomes.
The base generalization of Head/Tail is a “Categorical distribution”.

Rémi

http://en.wikipedia.org/wiki/Categorical_distribution
http://en.wikipedia.org/wiki/Bernoulli_distribution

http://en.wikipedia.org/wiki/Multinomial_distribution
http://en.wikipedia.org/wiki/Binomial_distribution