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).

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