The mean and S.D of the marks of 200 candidates were found to be 40 and 15 respectively. Latter, it was discovered that a score of 40 was wrongly read as 50. The correct mean and S. D respectively are

The mean and S.D of the marks of 200 candidates were found to be 40 an

1.	The mean and S.D of the marks of 200 candidates were found to be 40 and 15 respectively. Latter, it was discovered that a score of 40 was wrongly read as 50. The correct mean and S. D respectively are
A.	14.98, 39.95
B.	39.95, 14.98
C.	39.95, 224.5
D.	None of these
Answer» C. 39.95, 224.5

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The mean and S.D of the marks of 200 candidates were found to be 40 and 15 respectively. Latter, it was discovered that a score of 40 was wrongly read as 50. The correct mean and S. D respectively are

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