Question

How is negative binomial distribution related to geometric distribution?

Answer 1

Answer:

by dividing it this gementriacal sums am I right

Answer 2

Answer:

The geometric distribution (Let X) is a special case of the negative binomial distribution with r = 1.

More generally, if X1, ..., Xr are independent geometrically distributed variables with parameter p, then the sum

= (sigma)(r, m=1) Xm