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Bar Graph, Histogram and Frequency Polygon — MATHS STD 9 — Question

Rajasthan BoardEnglish MediumSTD 9MATHSBar Graph, Histogram and Frequency Polygon5 Marks
Question
Draw a histogram for the frequency distribution of the following date:
Class interval
8-13
13-18
18-23
23-28
28-33
33-38
38-43
Frequency
320
780
160
540
260
100
80
✓

Answer

Give frequency distribution is as below:
Class interval
8-13
13-18
18-23
23-28
28-33
33-38
38-43
Frequency
320
780
160
540
260
100
80
In the class intervals, if the upper limit of one class is the lower limit of the next class, it is know as the exclusive method of classification.
Clearly, the given frequency distribution is in the exclusive form.
We take class intervals along x-axis and frequency along y-axis.
So, we get the required histogram.
Since the scale on X-axis starts at 8, a kink (break) is indicated near the origin to show that the graph is drawn to scale beginning at 8.

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