ABSTRACT
When an experiment is performed multiple times, we are not guaranteed to get the exact same result every time. If we roll a die we do not get the same number of pips every time, and when milking a cow we end up with slightly different amounts of milk daily even if we treat and feed the cow the same way every day. The likeliness of different outcomes is described by probabilities, and this chapter introduces probability concepts and rules for calculations with probabilities.
