SS1: MATHEMATICS - 3RD TERM
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Geometry (Triangles & Polygon) I | Week 11 Topic
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Geometry (Triangles & Polygon) II | Week 22 Topics|1 Quiz
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Geometry (Triangles & Polygon) III | Week 3 & 42 Topics|1 Quiz
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Trigonometry I | Week 5 & 62 Topics
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Trigonometry II3 Topics|1 Quiz
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Trigonometry III3 Topics|1 Quiz
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Mensuration (Plane Shapes) | Week 81 Topic|1 Quiz
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Mensuration II4 Topics|1 Quiz
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Mensuration III | Solid Shapes8 Topics|1 Quiz
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Statistics | Week 92 Topics|1 Quiz
Bar Chart
Topic Content:
- Bar Chart
Definition: These are rectangular bars with varying heights but the same width with equal spaces or gaps separating the bars. The height of each bar represents the frequency of each value. The bars may be drawn vertically or horizontally. A bar chart can be used to display qualitative and discrete quantitative data.
Example 7.2.1:
The number of items produced by a company over a five-year period is given below:
Year | 1978 | 1979 | 1980 | 1981 | 1982 |
Number Produced | 4100 | 2500 | 1500 | 9200 | 1800 |
(a) Plot a bar chart for this information.
(b) What is the average production for the five-year period? (WAEC)
Solution:
(a)

(b)
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that was easy😁