JEE PYQ: Statistics Question 36
Question 36 - 2019 (12 Jan Shift 2)
If the sum of the deviations of 50 observations from 30 is 50, then the mean of these observations is:
(1) 30 (2) 51 (3) 50 (4) 31
Show Answer
Answer: (4) 31
Solution
$\sum x_i = 1550$. Mean $= \frac{1550}{50} = 31$.