User talk:Saqib1707

Hello.

I note that you edited the article titled Negative binomial distribution, interchanging the r and the k in the probability mass function, which was a function of k. The problem is that which should be r and which should be k depends on whether one is counting successes or failures. It can be done either way, but it should be consistent with the previous paragraph, which said it was counting failures rather than successes. For that reason I undid your edit. Michael Hardy (talk) 16:00, 25 February 2019 (UTC)