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Question
Is it correct to say that in a histogram, the area of each rectangle is proportional to the class size of the corresponding class interval? If not, correct the statement.
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Solution
As we know that in a histogram, the area of each rectangle is proportional to the corresponding frequency of its class.
Hence, the given statement is not correct.
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The following table gives the distribution of students of two sections according to the mark obtained by them:-
| Section A | Section B | ||
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| 0 - 10 | 3 | 0 - 10 | 5 |
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| 20 - 30 | 17 | 20 - 30 | 15 |
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(b) without using histogram
|
C.I |
5 -15 | 15 -25 | 25 -35 | 35 - 45 | 45-55 | 55-65 |
| ƒ | 8 | 16 | 18 | 14 | 8 | 2 |
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| Number of Students | 10 | 15 | 20 | 25 |
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