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प्रश्न
The mean of a certain number of observations is 32. Find the resulting mean, if the observation is, decreased by 7
उत्तर
Observed mean = 32
Decreased by = 7
∴ Resulting mean = 32 − 7 = 25
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संबंधित प्रश्न
Draw a histogram from the following frequency distribution and find the mode from the graph:
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| Frequency | 2 | 5 | 18 | 14 | 8 | 5 |
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| 6-7 | 20 |
| 7-8 | 45 |
| 8-9 | 65 |
| 9-10 | 95 |
| 10-11 | 60 |
| 11-12 | 30 |
| 12-13 | 5 |
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