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Question

Duration of watching TV by certain number of students are reperesented graphically in histogram. How many students watch TV for less than 5 hours?



A
35
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B
80
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C
45
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D
20
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Solution

The correct option is C 80
The histogram is made for continuous series distribution.

In the given histogram, students who watched TV for less than 5 hours are the sum of the length of a bar of class interval 1-2, 2-3, 3-4 and 4-5.

Hence, the number of students who watch TV for less than 5 hours = 10+15+20+35 = 80.

Mathematics

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