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प्रश्न
Result (Percentage) | 30 - 40 | 40 - 50 | 50 - 60 | 60 -70 | 70 - 80 | 80 - 90 | 90 - 100 |
No. of students | 7 | 33 | 45 | 65 | 47 | 18 | 5 |
उत्तर
Consider the following table:
Class (Result in %) |
Class Mark | Frequency (Number of students) |
Coordinates of points |
20 - 30 | 25 | 0 | (25, 0) |
30 - 40 | 35 | 7 | (35, 7) |
40 - 50 | 45 | 33 | (45, 33) |
50 - 60 | 55 | 45 | (55, 45) |
60 - 70 | 65 | 65 | (65, 65) |
70 - 80 | 75 | 47 | (75, 47) |
80 - 90 | 85 | 18 | (85, 18) |
90 - 100 | 95 | 5 | (95, 5) |
100 - 110 | 105 | 0 | (105, 0) |
The frequency polygon using the class mark and frequency given in the above table

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