Discrete Probability Distribution. What is the formula of discrete probability distribution? In probability theory and statistics, a discrete probability distribution is a probability distribution characterized by a probability mass function (pmf) that assigns non-negative real numbers to the outcomes of a discrete random variable.

A discrete random variable is a random variable that can assume only a finite or countably infinite set of values. Examples of discrete random variables include the following:

- the number of heads in a sequence of coin flips

- the number of people in a room

- the number of cars in a parking lot

### What is an example of discrete random variable?

A discrete random variable is a random variable that can take on only a finite or countable number of values. Examples of discrete random variables include the number of heads that occur when a coin is flipped, the number of cars that pass through a toll booth in a given day, and the number of students who get a certain score on a test.

##### What is the difference between discrete probability and continuous probability?

Discrete probability is based on a finite or countable sample space. This means that the possible outcomes of a discrete random variable are separate and distinct. Continuous probability is based on an uncountable sample space. This means that the possible outcomes of a continuous random variable are not separate and distinct. What do you call the graph of a discrete probability distribution? A graph of a discrete probability distribution is called a probability mass function (pmf).

#### What is a real life example of probability?

A real life example of probability would be finding the likelihood of winning the lottery. The probability of winning the lottery is usually about 1 in a million, which means that for every one million times the lottery is played, there is only one winner.