Has a Geometric Distribution?

Geometric distribution - A discrete random variable X is said to have a geometric distribution if it has a probability density function (p.d.f.) of the form: P(X = x) = q^(x-1)p, where q = 1 - p.

What is an example of geometric distribution?

For example, you ask people outside a polling station who they voted for until you find someone that voted for the independent candidate in a local election. The geometric distribution would represent the number of people who you had to poll before you found someone who voted independent.

How do you find the geometric distribution?

The probability of exactly x failures before the first success is given by the formula: P(X = x) = p(1 – p)^x–1 where one wants to know probability for the number of trials until the first success: the xth trail is the first success.