NCERT Example 16 - Statistics
Question: The mean and standard deviation of 100 observations were calculated as 40 and 5.1. Later, 50 was found to have been entered as 40. Find the corrected mean and standard deviation.
Answer: Corrected mean = 39.9 and corrected standard deviation = 5.
Full step-by-step NCERT solution with diagrams on Something by Zero.