Mathematics · Statistics
For a dataset of 50 observations, the mean and standard deviation were initially calculated as 30 and 3, respectively. Later, it was discovered that one observation, which was actually 40, was wrongly recorded as 10 during calculations. Find the correct standard deviation (rounded off to one decimal place).
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 11.6✓
- 22.8
- 33.2
- 42.2
Correct answer
1.6
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