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Question

Draw a histogram to represent the following data set.
Marks01010202040405050606070709090100
No. of students 4 6 14 16 14 8 16 5

Solution
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The minimum of the class widths of the data set is 10. So, we draw rectangles with class intervals as bases and the lengths of the rectangles given by
Length of Rectangle =FrequencyClasswidth×10.
Thus, the histogram can be drawn as follows.
Marks01010202040405050606070709090100
No. of students 4 6 14 16 14 8 16 5
Class width 10 10 20 10 10 10 20 10
Length of the Rectangle410×10=4 610×10=61420×10=71610×10=161410×10=14810×10=81620×10=8510×10=5

753135_619643_ans_3e1bc8cc822d45d2ac2f3bb2d853016e.jpg

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