Two-way tables
You can use a two-way table to show two sets of information.
Exercise in two-way tables
Aled carried out a survey to see how many of his classmates are left-handed. His results are shown in the table below:
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:
- boys and girls
- 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 \({12}\) right-handed).
Question
- How many right-handed pupils are there in the class?
- How many pupils are there in total?
- 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.