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probability scaleProbability is a way of assessing chance, likelihood or risk. It may be quoted as a decimal, fraction or percentage. The probability of an impossible event is 0 and the probability of a certain event is 1. All other probabilities are between 0 and 1.
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Glossary

event

any set of possible outcomes of a statistical experiment

fraction

A ratio of two numbers or polynomials.

Full Glossary List