The correct option is a. Poisson.
The distribution used to describe the number of events that occur when a given average number of events is expected is the Poisson distribution.
What is Poisson distribution?
The Poisson is a distribution of probabilities used in statistics to indicate number of times times an occurrence is likely to happen over a certain time period.
Some key features regarding the Poisson distribution are-
- It is, in other words, a count distribution. Poisson distributions are frequently used to analyze independent events that happen at a constant rate during a specified time frame.
- It was named after Siméon Denis Poisson, a French mathematician.
- A Poisson is a discrete function, which means that the variables can only take values from a (possibly endless) list.
- To put it another way, the variable cannot accept all values in either continuous range.
- The variable in the Poisson distribution could only accept whole values (0, 1, 2, 3, etc.), no fractions or decimals.
To know more about the Poisson distribution, here
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