# Mathematical probability

From Teflpedia

**Probability** is a mathematical measure quantifying the likelihood that events will occur.

Probability may be expressed as a fraction in various ways:

- As a percentage, e.g. 25%
- As a decimal fraction, e.g. 0.25
- As a vulgar fraction, e.g. 1/4
- As odds, e.g. 3-1.

Probability ranges from 0% probability - impossibility, to 100% probability - certainty.

Most discussions of probability focus on the mathematics of probability. Here, we focus on the language of probability. Mathematical probability needs to be discussed however as it underpins most of statistics.

In English, probability is expressed using modal verbs and through various probability adverbials, including probability adverbs.