JEE Main 2025 Mathematics question
Let the mean and the standard deviation of the observation 2, 3, 3, 4, 5, 7, a, b be 4 and respectively. Then the mean deviation about the mode of these observations is :
Answer: (2)
Solution
Solving gives . Numbers: 2,3,3,4,4,4,5,7 with mode 4. Mean deviation about mode = .