Pie Chart

Hi, children. Today we will learn about pie chart.

Do you know what is a pie chart?

A pie chart is a circular chart in which the circle is divided into sectors.  Each sector visually represents an item in a data set to match the amount of the item as a percentage or fraction of the total data set.

Example

The table below shows the favourite sports of  the pupils of  6 Hijau.

Sports	No. of Pupils
Basketball	25
Netball	10
Soccer	15

Draw a pie chart to display the information.

Step 1

The total number of pupils of 6 Hijau   = 25 + 10 + 15
                                                                        = 50
Step 2
We can find what percentage of the favourite sports each item equals.

Percentage of the favourite sports on:


Basketball    = 25   x  100%  =  50%
                         50
Netball            = 10   x  100%  = 20%
                          50
Soccer            = 15   x  100%  = 30%
                          50

Step 3

To draw a pie chart, divide the circle into 100 percentage parts.  Then allocate the number of percentage parts required for each item.