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Unit 8

Probability of Simple Events

Probability The measure of how likely the event is to occur.
Experiment An activity involving chance.
Trial Each repetition or observation of an experiment.
Outcome The result of a trial.
Event A set of one or more outcomes.
Likely An event that has a probability to occur more than 1/2, but less than 1.
Unlikely An event that has a probability to occur more than 0, but less than 1/2.
Certain An event that has a probability of 1 to occur, or 100%.
Impossible An event that has a probability of 0 to occur.
As Likely As Not An event that has a probability of 1/2 to occur, or 50%.
Theoretical Probability Used to find the probability of an event when all outcomes are equally likely. This is used to make predictions BEFORE performing an experiment.
Complement The set of all outcomes that are NOT the event.
Experimental Probability The probability of an event based on what has already happened.
Independent Events the result of the second event is not affected by the result of the first event.
Dependent Events the probability of one event occurring influences the likelihood of the other event.
Created by: Mrs Ott