Pie charts and frequency diagrams

Once raw data has been collected, you need to represent it in a diagram.

Two ways of doing this are to use a pie chart or frequency diagram.

Example

In a survey, 100 school students were asked to name their favourite soap.

The results are shown in a pie chart and a frequency diagram below.

Pie chart and bar graph of popular soaps in a school

In another school, Emmerdale was the most popular soap:

Pie chart and bar graph of popular soaps in a school