Theoretical Probability (Grade 10 NSC Matric Mathematics): Flashcards

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Theoretical Probability
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Experiment (probability)

Uncertain process; exact outcome can't be predicted

Outcome (probability)

Single possible result from an experiment

Sample space

Complete set of all possible outcomes

Event (probability)

Specific set of outcomes we're interested in

Theoretical probability formula

P(E)=n(E)n(S)P(E) = \frac{n(E)}{n(S)}

Meaning of P(E)=0P(E) = 0

Event will never happen

Meaning of P(E)=1P(E) = 1

Event will always happen

Condition for using P(E)=n(E)n(S)P(E) = \frac{n(E)}{n(S)}

All outcomes must be equally likely

Probability value range

Between 0 and 1 (inclusive)

3 conditions for theoretical probability

Outcomes known, equally likely, finite sample space

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