Mathematics · Statistics
The mean and standard deviation of 20 observations are found to be 10 and 2, respectively. On rechecking, it was found that an observation was incorrectly taken as 8 instead of 12. The correct standard deviation is:
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1√4.16
- 2√3.96✓
- 31.80
- 4√3.86
Correct answer
√3.96
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