JEE Main 2019 Mathematics question
If the sum of the deviations of 50 observations from 30 is 50, then the mean of these observations is:
Answer: (A)
Solution
Mean = 30 + 50/50.
If the sum of the deviations of 50 observations from 30 is 50, then the mean of these observations is:
Mean = 30 + 50/50.