state gov Rajasthan Gram Vikas Adhikari (VDO) Mock Test 2021 Mathematics Statistics Variance and Standard Deviation
In any discrete series (when all values are not same) if x represent mean deviation about mean and y represent standard deviation, then which one of the following is correct?
1
y ≥ x
2
y ≤ x
3
x = y
4
x < y