Probability is a statistical measure used to express the chances and risks in real life happenings. The study of statistics starts with the probabilities involved in simple experiments like tossing a coin or throwing a die. Advanced methods involving probability are used in predicting Poll outcomes, future job requirements, testing the validity or effectiveness of new medicines and in production planning.

## Probability Definition

The probability of an event is a number between 0 to 1 which measures the chance of that event occurring. The likelihood of the occurrence of the event increases as the probability varies from 0 to 1. The probability of the occurrence of an impossible event is 0 and that of a certain to occur event is 1.

Probabilities can be expressed as decimals, fractions or percents.

### Statistics

 Permutations and Combinations Sample Space Conditional Probability Random Variables Probability Function Discrete Distribution Continuous Distribution Sampling Distribution Probability Examples Binomial Probability Probability Theory Independent Probability Joint Probability Distribution Conditional Expectation Uniform Distribution Triangular distribution
 Compound Probability Conditional Probabilities Probability Equations Probability Event Probability Functions Probability Permutations Bayes Theorem Probability Binomial Distribution Probability Binomial Probability Distribution Mathematic Induction Mathematical Quadrants Mathematical Statistics
 Calculation of Probability geometric distribution calculator probability probability of sample mean calculator