Chapter 3 - Geometric and negative binomial distribution
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17 Terms
Geometric distribution definition
How many trials occur, each with the same probability, until the first success is seen
(e.g. how many times would we have to throw a dice until we get a six)
When to use geometric distribution
Indefinite number of successive trials
Trials are independent of each other
Two possible outcomes (success or failure)
Probability of success is constant
p = probability
x = number of trials
~ = the geometric distribution of X
p = probability
Geometric distribution
Geometric distribution
Negative binomial distribution definition
The number of trials needed to reach a fixed number of successes
(e.g. how many times I roll a dice until I get my 4th six)
When to use negative binomial distribution
Indefinite number of successive trials
Trials are independent of each other
Two possible outcomes (success or failure)
Probability of success is constant
x = number of trials
r = number of successes
p = probability of success
~ = the negative binomial distribution of X
r = number of successes
p = probability of success
Negative binomial distribution
Negative binomial distribution