4. Representing data: Pie Chart

• Wiskunde
• Middelbare school
• havo, vwo
• Leerjaar 2

Representing data:

4. Pie charts

What we will do today.....

• Review previous lesson.
• Learning objectives 
• Pie chart
• Homework

Review

Learning goals:

You will learn how to draw a pie chart!

Entry Ticket
In January 2020, there were 17.613 owner-occupied properties in the district of Luton. That was 73,8% of all houses.

How many houses were there in Luton at that time?

1. 12.998
2. 23.865
3. 23.866
4. 23.900

The answer is...

Pie Chart

When to use pie charts?

this chart is most effective when you have a small number of categories and want to emphasize proportions, especially with percentage data.

Pie charts

Pie charts

- The parts is a pie chart are called sectors.

Pie charts

- The parts is a pie chart are called sectors.

- The percentages of all sectors add up to 100%

Pie charts

- The parts is a pie chart are called sectors.

- The percentages of all sectors add up to 100%

- The angles of all sectors add up to 360 degrees

​120​​30​​⋅360=90

​120​​30​​⋅360=90

90

​120​​15​​⋅360=45

90

​120​​15​​⋅360=45

90

45

​120​​75​​⋅360=225

90

45

90

45

225

 Fill in the blanks

The pie chart shows the favourite fruit of a group of students

Check your answers

Limitations of pie charts

Homework

-Teams => worksheet pie charts & line charts => questions 1,2 & 3