MathLiveClassical probability of an event
Gives the probability of an event as the number of outcomes favorable to it divided by the total number of equally likely outcomes in the sample space. It applies only when all outcomes are equally likely.
P(A)=\frac{|A|}{|S|}What the symbols mean
| probability that event A occurs, a number between 0 and 1 | |
| number of outcomes in event A (favorable outcomes) | |
| total number of outcomes in the sample space S |
About this formula
- FieldMathematics
- TopicProbability basics
- LevelHigh school
- Also calledprobability of an event, classical definition of probability, equally likely outcomes probability, favorable outcomes over total outcomes, laplace probability, probability formula
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