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Probability Vocabulary
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Key Concepts:
Terms in this set (11)
Probability
Measures how likely an event is to occur
Outcome
A possible result of a probability experiment or situation
Sample Space
The set of all possible outcomes
Event
An outcome or set of outcomes
Equally Likely Outcomes
Outcomes that have the same chance of occurring
Theoretical Probability
A ratio of the number of favourable outcomes to the total number of outcomes
Experimental Probability
the ratio of the number of times that the event occurs to the number of trials
Complement
The set of all outcomes in the sample space that is not in an event
Trial
Each repetition of an experiment
Addition Law of Probabilities
Pr(A∪B)=Pr(A)+Pr(B)-Pr(A∩B)
Mutually Exclusive Events
Events A and B cannot happen at the same time. That is Pr(A∩B)=0
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