5.1.15

Complete Frequency Trees

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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
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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