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Probability

The probability of an event is the likelihood of it happening. Probabilities are between 0 and 1 and the higher the probability, the more likely the event is to occur. Probabilities can be given as decimals, fractions or percentages.

Notation

Notation

  • For a fair dice, P(6) means the probability of rolling a 6.
  • For a bag of coloured balls, P(red) means the probability of a red ball being pulled out.
Notation

Notation

  • The probability of something is always greater than or equal to 0, and less than or equal to 1.
  • Probabilities can be expressed as a decimal, fraction or percentage.
Relative frequency

Relative frequency

  • The relative frequency of an outcome during a probability experiment is an estimate of the probability of that outcome.
  • The more trials performed during the experiment, the more accurate the estimate.
Jump to other topics
1

Number

1.1

Place Value

1.2

Factors & Multiples

1.3

Operations

1.4

Fractions, Decimals & Percentages

1.5

Growth & Decay

1.6

Measurements & Units

1.7

Accuracy

2

Algebra

2.1

Introduction to Algebra

2.2

Graphs

2.3

Solving Equations

2.4

Sequences

3

Ratio, Proportion & Rates of Change

4

Geometry & Measures

4.1

Introduction to Geometry

4.2

Ruler & Compass Constructions

4.3

Perimeter & Area

4.4

Triangles, Quadrilaterals & Circles

4.5

Transformations

4.6

Triangle Formulae

4.7

3D Shapes

4.8

Vectors

5

Probability

6

Statistics

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