NDA 2022 Mathematics question

What is the coefficient of mean deviation of 21, 34, 23, 39, 26, 37, 40, 20, 33, 27 (taken from mean)?

Answer: (B)

Solution

Sum , so the mean is 30. Absolute deviations from the mean: 9, 4, 7, 9, 4, 7, 10, 10, 3, 3, with sum 66. Mean deviation $=

Create a free account to read the complete working, and practise questions like this in a timed test.

Question ID VK-029396