5.3.1

Theoretical Probability

Test yourself

Theoretical Probabilities

We can work out the theoretical probabilities involved in an experiment without having to do the experiment itself.

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Formula

  • This is true assuming all outcomes are equally likely.
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Example

  • P(rolling even number on fair die) = 3 ÷ 6 = 12
    • There are 3 even numbers it could be (2,4,6) and there are 6 possible outcomes overall (1,2,3,4,5,6).

Jump to other topics

1Number

1.1Place Value

1.2Factors & Multiples

1.3Operations

1.4Fractions, Decimals & Percentages

1.5Growth & Decay

1.6Measurements & Units

1.7Accuracy

2Algebra

3Ratio, Proportion & Rates of Change

4Geometry & Measures

5Probability

6Statistics

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