s a geometric probability plot (with &#39;bernoulli
probability&#39; parameter value = p).

the geometric distribution used herein has mean = (1-p)/p and standard
deviation = sqrt((1-p)/(p*p))). this distribution is defined for
all non-negative integer x--x = 0, 1, 2, ... . this distribution
has the probability function

    f(x) = p <span class="gs">* (1-p)*</span>*x.

the geometric distribution is the distribution of the number of
failures before obtaining 1 success in an indefinite sequence of
bernoulli 