Negative Binomial Vs GeometricSo I am trying to get the difference between these two distributions. I think I understand them but the negative binomial has me a bit confused.The Geometric is the probability of some amount of successes before the first failure.The Negative binomial is the portability of some amount of successes before a specified number of failures? for example the number of successes before the 8th failure?

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barene55d · Accepted Answer

Let   w  =  1  +  z. Now, the branch cut for   log  ⁡  w starts at   w  =  0. So, the branch cut for   log  ⁡  (  1  +  z  ) starts where   1  +  z  =  0. In other words, where   z  =  −  1

Negative Binomial Vs Geometric. The Negative binomial is the portability of some amount of successes before a specified number of failures? for example the number of successes before the 8th failure?

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