Tables are given of the expected value of 1/X, the expected value of 1/X 2, and the standard deviation of 1/X, where X is a variable following a negative binomial distribution whose zero class is ...

If X 1, X 2, ... is a sequence of independent Bernoulli random variables, the number of successes in the first n trials has a binomial distribution and the number of failures before the rth success ...