The mean of 25 observations was found to be 78.4. But later on it was found that 96 was misread as 69. The correct mean is
(a) 76.54 (b) 78.4 (c) 79.48 (d) 81.32
The mean of 25 observations was found to be 78.4. But later on it was found that 96 was misread as 69. The correct mean is
(a) 76.54 (b) 78.4 (c) 79.48 (d) 81.32