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प्रश्न
Calculate man of the following: 4, 6, 6, 6, 7, 7, 7, 7, 8, 8, 9, 9, 11, 3
योग
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उत्तर
| x | f | fx |
| 3 | 1 | 3 |
| 4 | 1 | 4 |
| 6 | 3 | 18 |
| 7 | 4 | 28 |
| 8 | 2 | 16 |
| 9 | 2 | 18 |
| 11 | 1 | 11 |
| Total | 14 | 98 |
∴ Mean = `(sum"fx)/(sumf)`
Or
= `(98)/(14)` = 7.
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Properties of Mean
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