The mean of 50 observations was 36. It was found later that an observation 48 was wrongly taken as 23. The corrected mean is

Mean of 20 observations is 15.5. Later on it was found that the observation 24 was taken as 42. The correct mean is-

The mean of 25 observations is 72. It was detected that one observation 53 was wrongly copied as 78. Find the correct mean.

The mean of 25 observations is 72. It was detected that one observation 53 was wrongly copied as 78. Find the correct mean.

The average of 25 observations is 13. It was later found that an observation 73 was wrongly entered as 48. The new average is

The mean of 100 observations is 40. It is found that an observation 53 was misread as 83. Find the correct mean.

The mean of 100 observations is 40. It is found that an observation 53 was misread as 83. Find the correct mean.

The mean of 40 observations was 160. It was detected that the value of 165 was wrongly copied as 125. Find the correct mean.

The mean of 5 observations is 7. Later on, it was found that two observations 4 and 8 were wrongly taken instead of 5 and 9. Find the corrected mean.