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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 :
| 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 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.
View full answer
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