JEE Main 2013 Mathematics question
The mean of a data set consisting of 20 observations is 40 . If one observation 53 was wrongly recorded as 33 , then the correct mean will be:
Answer: (1)
Solution
Correct sum ; mean , option (1).
The mean of a data set consisting of 20 observations is 40 . If one observation 53 was wrongly recorded as 33 , then the correct mean will be:
Correct sum ; mean , option (1).