Construct histogram for the following frequency table :
Class Interval
0−5
5−10
10−15
15−20
20−25
Frequency
18
15
14
8
10
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Solution
We take OX and OY as x-axis and y-axis respectively on the graph paper and O as the origin. We represent class interval on the x-axis by choosing the scale as 1cm=5 units. We represent the frequency on y-axis by taking the scale as 1cm=4. We now draw graph for the given frequency table, so rectangles A,B,C,D and E are constructed.