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CGP EDU Academic Team
Published on: August 14, 2026
The mean and S.D. of the marks of 200 candidates were found to be 40 and 15 respectively. Later, it was discovered that a score of 40 was wrongly read as 50. The correct mean and S.D. respectively are
Text Solution
Verified by ExpertsThe correct answer is:
B
Corrected 
∴ ∴ Corrected 
Incorrect 
Correct 
∴ ∴ Corrected 
.
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