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 equal to:

Verified Solution4 OptionsUpdated: October 2026👁️1 View

1x̄ + n2
2x̄ + (n + 1)
3x̄ + n + 12✓
4x̄ + (2n + 1)

Correct answer

x̄ + n + 12

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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 equal to:

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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 equal to:

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