This document provides instructions on how to construct a pie chart. It explains that a pie chart represents data in circular sections, with the central angle of each section proportional to the percentage of the total value it represents. It provides an example of exam results data and shows how to calculate the central angle for each result and draw a pie chart representing this information.

1. DIGITAL LESSON
PIE - CHART

2. Have you here about the word PIE ?

3. American food item

4. What is the name of graph
represented in CIRCLE?
1st Qtr
2nd Qtr
3rd Qtr
4th Qtr

5. PIE CHART
GUESS…

6. 1st Qtr
2nd Qtr
3rd Qtr
4th Qtr
KEY
PIE CHART
SECTORS

7.  Total angle of a circle is 360˚.
 Central Angle of Component =
Value of component * 360˚
Total Value
CONSTRUCTION OF PIE CHART

8.  Calculate central angle, using formula.
 Draw a Circle.
Construction of Pie chart:

9.  Draw horizontal radius

10.  Draw radius making central angle of the
first component.
First Component

11.  From this radius , draw next radius with central angle
of second component.
 Repeat until we exhaust all component.
First Component
Second Component

12. Shade each sector differently and
mark the component.
Give a key.
Give the heading.
Cont…

13. The SSLC Public Examination results of a school as
follows:
Draw a pie chart to represent the above information.
PROBLEM
Result Passed in
first class
Passed in
second class
Passed in
third class
Failed
Percentage
of students
25% 35% 30% 10%

14.  Central Angle of Component =
Value of component * 360˚
Total Value
Solution:
Results Percentage of
students
Central angle
Passed in first class 25% 25*360˚/100 = 90˚
Passed in second
class
35% 35*360˚/100= 120˚
Passed in third
class
30% 30*360˚/100=108˚
Failed 10% 10*360˚/100=36˚
Total 100% 360˚

15. SSLC Public Examination Results
Passed in First Class
Passed in Second Class
Passed in Third Class
Failed

16. The data on modes of transport used by students to come
to school are given below:
Represent the data by a pie chart.
Evaluation
Mode of
Transport
Bus Cycle Walking Scooter Car
Percentage
of students
40% 30% 15% 10% 5%

17. THANK YOU