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##### Asked by: Maram Costin

science space and astronomy# How do you find the geometric random variable?

**geometric random variable**, denoted by X ~ geo(p), counts the number of attempts needed to obtain the first success. (from k-1 failures followed by a success). The average (or mean) number of attempts needed to succeed is given by E[X] = 1 / p.

Hereof, how do you find the geometric distribution?

The **geometric distribution** would represent the number of people who you had to poll before you found someone who voted independent. You would need to get a certain number of failures before you got your first success. If you had to ask 3 people, then X=3; if you had to ask 4 people, then X=4 and so on.

**Poisson**percent point function does not exist in simple closed form. It is computed numerically. Note that because this is a

**discrete distribution**that is only defined for integer values of x, the percent point function is not smooth in the way the percent point function typically is for a

**continuous distribution**.

Additionally, what is the formula for geometric probability?

**Geometric probability** is the **calculation** of the likelihood that you will hit a particular area of a figure. It is calculated by dividing the desired area by the total area. The result of a **geometric probability calculation** will always be a value between 0 and 1.

The **expected value** (EV) is an anticipated **value** for an investment at some point in the future. In statistics and probability analysis, the **expected value** is calculated by multiplying each of the possible outcomes by the likelihood each outcome will occur and then summing all of those **values**.