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5. Diagram (a) and Diagram (b) show two histograms which represent the Science and
Mathematics marks of Form 1 students.

Science Marks of Form 1 Students Mathematics Marks of Form 1 Students
50 50

40 40
Frequency 30 Frequency 30

20
20
10 10

0 51-60 61-70 71-80 81-90 91-100 0 51-60 61-70 71-80 81-90 91-100
Marks Marks

Diagram (a) Diagram (b)
(a) Find the number of students who obtained more than 80 marks in each test.
(b) Describe briefly the distribution of marks in each test.
(c) Compare the distributions of the Science and Mathematics marks. What inference
can be made?

6. The bar chart shows the number of lamps sold by five shops in a month.
Lamp Sales

160

Number of lamps 140

120

100 CHAPTER
A B C D E 12
Shop
(a) What can you say about the number of lamps sold by shop A and shop B?
(b) Shop E claims that the number of lamps it sold is twice the number of lamps sold
by Shop C. Is this claim valid? Explain your answer.

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Data Handling

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