Mean marks obtained by 100 students are estimated to be 40. Later on its is found that one value was read as 83 instead of 53.
Find out the ''corrected'' mean.

The mean of marks scored by 100 students was found to be 40. Later on it was discovered that a score of 53 was misread as 83. Find the correct mean.

The mean of marks scored by 100 students was found to be 40. Later on it was discovered that a score of 53 was misread as 83. Find the correct mean.

The mean of marks scored by 100 students was found to be 40. Later on it was discovered that a score of 53 was misread as 83. Find the correct mean.

The mean of marks scored by 100 students was found to be 40, later on, it was discovered that a score of 53 was misread as 83. find the correct mean.

The average mark obtained by 100 students is 40. But is was later found that the mark of one student was wrongly written as 83 instead of 53. Find the value of the actual mean.

The mean marks of 100 students were found to be 40. Later on it was discovered that a score of 53 was misread as 83. The corrected mean corresponding to the corrected score is: (a) 37.5 (b) 35.6(c)39.7 (d) 38.7

For a group of 200 students the mean and S.D of marks obtained by them were found to be 40 and 15 respectively.Later on,it was found that the score 23 was misread as 32.Find the correct mean and correct S.D

For a group of 200 students the mean and S.D. of marks obtained by them were found to be 40 and 15 respectively. Later on, it was found that the score 23 was misread as 32. Find the correct mean and correct S.D.

In an examination, the mean of marks scored by a class of 30 students was calculated as 58.5 Later on, it was detected that the marks of one student was wrongly copied as 57 instead of 75. Find the correct mean.