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Question
Draw an ogive for the following :
| Class Interval | 0-10 | 10-20 | 20-30 | 30-40 | 40-50 |
| Frequency | 8 | 12 | 10 | 14 | 6 |
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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 (10,8),(20,20),(30,30),(40,44),(50,50).
4. Join the points plotted by a smooth curve .
| less than | cumulative frequency |
| 10 | 8 |
| 20 | 20 |
| 30 | 30 |
| 40 | 44 |
| 50 | 50 |
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