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Question
Draw an ogive for the following :
| Class Interval | 10-19 | 20-29 | 30-39 | 40-49 | 50-59 |
| Frequency | 28 | 23 | 15 | 20 | 14 |
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Solution
Steps :
1. On the x-axis , take 1 cm as 5 units and plot class interval.
2. On the y-axis , take 1 cm as 5 units and plot frequency.
3. Plot the points with coordinates having abscissae as actual limits and ordinates as the cumulative frequencies . In this case (19,28),(29,51),(39,66),(49,86),(59,100).
4. Join the points plotted by a smooth curve .
| less than | Cumulative Frequency |
| 19 | 28 |
| 29 | 51 |
| 39 | 66 |
| 49 | 86 |
| 59 | 100 |
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