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Bernoulli Random Variable (Trials)
a discrete random variable that has only two possible values 1 (success) or 0 (failure).
Binomial Random Variable
a discrete random variable that is the number of successes in n independent and identical Bernoulli trials. Its possible values are 0,1,2,…n.
Geometric Random Variable
a discrete random variable that is the number of Bernoulli trials needed until the first success. Its possible values are 1,2,….
Hypergeometric Random Variable:
a discrete random variable that is the number of successes in k trials. Its possible values 0,1,2,…k.
Poisson Random Variable
a discrete random variable that counts the number of times a certain event will occur in a specific interval. Its possible values 0,1,2,….
Probability Distribution Function (PDF)
a mathematical description of a discrete random variable.
Cumulative Probability Distribution Function (CDF):
another mathematical description of a discrete random variable.
Random Variable (RV):
a characteristic of interest in a population being studied.
