CUET Preparation Today
The mean of 9 observations is 43. Later, it was found that 59 was misread as 69. What would be the correct mean? (correct to two decimal places). |
44.11 41.89 42.11 43.89 |
41.89 |
Mean of 9 observations = 43 Sum of 9 observations = 9 x 43 = 387 Actual Sum = Incorrect Sum − Incorrect term + Correct term Actual Sum = 387 − 69 + 59 = 377 Actual mean = \(\frac{377}{9}\) = 41.89 |
