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Maths

Collecting and recording data

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Two-way tables

You can use a two way table to show two sets of information.

Investigation example

Aled carried out a survey to see how many of his classmates are left-handed. His results are shown in the table below:

  Left-handed Right-handed
Boys 2 14
Girls 1 12

This is an example of a two-way table and it is used to show two different features in a survey.

In this case it shows:

  1. Boys and girls
  2. Left-handed or right-handed

You can find out lots of information from this table. For example, you can see that there are 2 left-handed boys in the class. You can also see that there are 13 girls in the class (1 left-handed and 12 not left-handed)

Question

Q1. How many right-handed children are there in the class?

Q2. How many children are there in total?

Answer

A1. There are 14 right-handed boys and 12 right-handed girls, so 14 + 12 = 26 in total.

A2. There are 29 children in total.
This is the total of all the numbers in the table.

Activity

Collecting and recording data activity

Does everything tally up? Try this activity.

Play

Whack Attack

Whack and zap mad professors and aliens!

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