Question
Mathematics Question on Mean, median, mode and standard deviation
The mean of 50 items is 100. At the time of calculations, two items 80 and 190 were wrongly taken as 90 and 20. What is the correct value of the mean?
A
102.5
B
103.2
C
103.5
D
104.2
Answer
103.2
Explanation
Solution
The correct answer is(B): 103.2