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JSS2: MATHEMATICS - 3RD TERM

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  1. Scale Drawing | Week 1
    3 Topics
    |
    1 Quiz
  2. Angles of Elevation & Depression | Week 2
    3 Topics
    |
    1 Quiz
  3. Pythagoras’ Theorem I | Week 3
    3 Topics
    |
    1 Quiz
  4. Pythagoras’ Theorem II | Week 4
    2 Topics
    |
    1 Quiz
  5. Area and Volume of Cones and Cylinders | Week 5
    3 Topics
    |
    1 Quiz
  6. Cones | Week 6
    3 Topics
    |
    1 Quiz
  7. Bearings and Distances I | Week 7
    2 Topics
    |
    1 Quiz
  8. Bearings and Distances II | Week 8
    2 Topics
    |
    1 Quiz
  9. Presentation of Data | Week 9
    6 Topics
    |
    1 Quiz
  10. Probability | Week 10
    6 Topics
    |
    1 Quiz



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Topic Content:

  • Meaning of Pie Chart
  • Interpreting Pie Chart

Pie charts are used to display data in a circle to show how things are divided into sectors. Pie charts are widely used in advertising and in the business world because they are very easy to understand. 

Example 9.6.2: 

At a restaurant, a refrigerator is emptied every day in order to clean it. The table below shows the number of each type of drink in the refrigerator on a certain day. 

(a) Draw a pie chart to show the information 
(b) What percentage of the drinks was fanta? 

Type of DrinkFrequency
(No of Drinks)
Coke 15
Fanta 12
Sprite 8
Lemon 6
Vita Malt 9

Solution 

(a) Total number of drinks = 15 + 12 + 8 + 6 + 9 

∴ Total number of drinks = 50 

There are 360° (degrees) in a circle, so you need to find the fraction of 360° in each case. 

 

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