Question

E(X) = λ is used for which distribution?

A Binomial distribution Correct Answer Incorrect Answer
B Poisson's distribution Correct Answer Incorrect Answer
C Bernoulli's distribution Correct Answer Incorrect Answer
D Laplace distribution Correct Answer Incorrect Answer
E Normal distribution Correct Answer Incorrect Answer

Solution

In Poisson's distribution, a positive constant called λ is used, which is the mean and variance of the distribution. The Poisson distribution predicts how many of a certain type of event will occur in a bounded area or during a given period, provided that the events occur independently and cannot occur simultaneously. The events are sometimes called "outcomes" or "observed occurrences."

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