Mathematics · Statistics
The mean of n observations is X̄. If the first observation is increased by 1, the second by 2, the third by 3, and so on, then the new mean is:
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1None of these
- 2X̄ + n + 12✓
- 3X̄ + n2
- 4X̄ + n
Correct answer
X̄ + n + 12
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