Below is the histogram depicting marks obtained by 43 students of a class:
(i) Write the number of students getting the highest marks.
(ii) What is the class size?

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Solution

(i) In the given histogram, the interval with the highest marks is 90 $-$ 100.
Three students are there in this interval because the height of the rectangle (90 $-$ 100) is 3 units.
(ii) The class intervals are 10 $-$ 20, 20 $-$ 30, ..., 90 $-$ 100. So, the class size is 10.

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Below is the histogram depicting marks obtained by 43 students of a class. What is the class size?

The histogram below shows the marks obtained by students in Mathematics.

In class intervals ________________ and ________________ , the number of students are equal.

40

100

30

50

60

80, 10, 30, 70, 60, 50, 50, 40, 40, 20, 40, 90, 50, 30, 70, 10, 60, 50, 20, 70, 70, 30, 80, 40, 20, 80,

90, 50, 80, 60, 70, 40, 50, 60, 90, 60, 40, 40, 60

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40

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