
 The Negative Binomial Distribution. As the marginal distribution of the Binomial (Site not responding. Last check: 20071003) 
  The Geometric Distribution is a special case of the negative binomial distribution with the number positive, in the second blue box, being '1' (one). 
  The negative binomial distribution does basically the same thing as the Binomial, except that now we are asking about the probability of a particular sample size, given that we have found 'x' results to be positive (or 'white', or 'car crashes'), whereas we had expected to find 'u' results to be positive. 
  Input is the same as for the binomial, but now the output expresses a change in the number of cases and not, as in the binomial, the number found positive. 
 home.clara.net /sisa/negb2hlp.htm (350 words) 
