Mean of 25 observations was found to be 78.4. but later it was found that 96 was mis-read as 69. Then the correct mean is
1
79.48
2
76.54
3
81.32
4
78.4
Mean of 25 observations was found to be 78.4. but later it was found that 96 was mis-read as 69. Then the correct mean is