Calculate mean deviation about mean and median for given observations {1, 1, 4, 2, 6, 100, 150, 200, 400}
Consider any set of 201 observations x1, x2, ⋯,x200, x201. It is given that x1<x2<⋯<x200<x201. Then, the mean deviation of this set of observations about a point k is minimum, when k equals