Parameters of the negative binomial distribution. Give exactly one of prob and mu.
prob
mu
Optional
Mean (mu = size * (1 - prob) / prob). Do not combine with prob.
mu = size * (1 - prob) / prob
Probability of success on each trial (0 < prob <= 1). Do not combine with mu.
0 < prob <= 1
Parameters of the negative binomial distribution. Give exactly one of
probandmu.