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.
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.