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  • Following table shows a frequency distribution for the speed of cars passing through at a particular spot on a high way : Draw a histogram and frequency polygon representing the data above.

The following table shows a frequency distribution for the speed of cars passing through at a particular spot on a highway:

Class interval (km/h) Frequency
30-40 3
40-50 6
50-60 25
60-70 65
70-80 50
80-90 28
90-100 14

Draw a histogram and frequency polygon representing the data above.

Answers (1)

To draw the histogram, we have to plot the frequency on the y-axis and the class interval on the x-axis. We can construct the histogram as follows:

A frequency polygon is a graph constructed by using lines to join the midpoints of each interval.

Accordingly, the curve ABCDEFGHI is the frequency polygon.

Posted by

infoexpert23

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