Problem Statement
The mean of 40 observations was 56. Later, one value 84 was found to be recorded as 48. What is the corrected mean?
Explanation
Error adds thirty six to the total. Correct sum is old sum plus thirty six. Old sum is 40×56 = 2240. New sum is 2276. Divide by forty to get fifty six point nine.
Code Solution
SolutionRead Only
newMean = (40×56 + 36)/40 = 2276/40 = 56.9
