The Coefficient of Variation for a Poisson Distribution with λ

question 68

Multiple Choice

The coefficient of variation for a Poisson distribution with λ = 4 is:

• A)35.2 percent.
• B)58.9 percent.
• C)50.0 percent.
• D)26.4 percent.

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Definitions:

Confidence Level

The probability or percentage that expresses how certain one can be about a confidence interval containing the true value of the parameter being studied.

Normal Distribution

A symmetric probability distribution centered around the mean, indicating that occurrences close to the mean are more common than those far away from it.

Confidence Interval

A spectrum of values calculated from statistcal samples which is expected to cover the value of a not yet known population trait.

Non-Normal Population

A population that does not follow a normal distribution, characterized by skewness, kurtosis, or other non-normal traits.