Following are the marks obtained by 9 students in a mathematics test:50, 69,20,33, 53,39, 40, 65, 59The mean deviation from the median is

Marks obtained by 9 students in Mathematics are: 50,69,20, 33, 53,39,40, 65, 59Let us rewrite the given data in ascending order.20, 33, 39, 40,50, 53, 59, 65, 69,Here, n = 9                                               [odd]Median (Me) = 5th term = 50 M.D. =xi−Men=1149=12.67