5.1.6

Complete Frequency Trees

Test yourself

Frequency Trees

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

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Completing a frequency tree

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

1Number

1.1Using Numbers

1.2Fractions, Decimals & Percentages

1.3Powers & Roots

1.4Accuracy

2Algebra

2.1Introduction to Algebra

2.2Manipulating Algebra

2.3Proofs & Functions

2.4Straight Line Graphs

2.5Common Graphs

2.6Transformations & Tangents

2.7Properties of Graphs

2.8Solving Equations

2.9Inequalities

2.10Sequences

3Ratio

4Geometry

4.1Introduction to Geometry

4.2Triangles & Quadrilaterals

4.3Transformations

4.4Circle Basics

4.5Circle Theorems

4.6Measurements & Units

4.7Calculating Area

4.8Triangle Formulae

4.93D Shapes

4.10Vectors

5Probability

6Statistics

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