discrete probability distribution binomial distribution Alejandra Gonzalez-Beltran Orlaith Burke Philippe Rocca-Serra The binomial distribution is a discrete probability distribution which describes the probability of k successes in n draws with replacement from a finite population of size N. The binomial distribution is frequently used to model the number of successes in a sample of size n drawn with replacement from a population of size N. The binomial distribution gives the discrete probability distribution of obtaining exactly n successes out of N Bernoulli trials (where the result of each Bernoulli trial is true with probability p and false with probability q=1-p ) notation: B(n,p) The mean is N*p The variance is N*p*q dbinom(x, size, prob, log = FALSE) http://stat.ethz.ch/R-manual/R-patched/library/stats/html/Binomial.html http://docs.scipy.org/doc/scipy/reference/generated/scipy.stats.binom.html#scipy.stats.binom http://en.wikipedia.org/wiki/Binomial_distribution ready for release