Question

2. For a group of 200 candidates, the mean and S.D
Were found to be 40 and 15. Later on it was discovered
That the score 43 was misread as 53. Find the correct mean
and standard deviation corresponding to the corrected figure. (4)​

Answer 1

Explanation:

For a group of 200 candidates, the mean and S.D

Were found to be 40 and 15. Later on it was discovered

That the score 43 was misread as 53. Find the correct mean

and standard deviation corresponding to the corrected figure.