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Frequency Trees

We can often work out values in an incomplete frequency tree.

Completing a frequency tree

Completing a frequency tree

  • That means that there were 28 - 19 = 9 days when it didn’t rain.
Completing a frequency tree

Completing a frequency tree

  • On those 9 days, Sandra didn’t miss the bus 7 days so she must have missed the bus on the remaining 9 - 7 = 2 days.
Completing a frequency tree

Completing a frequency tree

  • Of the 19 days when it did rain, Sandra didn’t miss the bus on 3 days so she must have missed the bus on the remaining 19 - 3 = 16 days.
Jump to other topics
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Numbers

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Equations, Formulae & Identities

3

Sequences, Functions & Graphs

4

Geometry

5

Vectors & Transformation Geometry

6

Statistics & Probability

Practice questions on Tree Diagrams

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