Question

find the mean deviation , co efficient of mean deviation about median when no. of accident :1,2,3,4,5,6,7,8,9,10,11,12, no. of injured is 16,15,19,3,4,2,17,3,1,6,8,6

Answer 1

numbers are 1,2,3,4,5,6,7,8,9,10,11,12
mean=1+2+3+4+5+6+7+8+9+10+11+12/2
mean=78/2
mean=39.