Given data : 5,10,3,6,4,8,9,3,15,2,9,4,19,11,4 On arranging the data in ascending order, we get 2,3,3,4,4,4,5,6,8,9,9,10,11,15,19 Range = Upper limit − lower limit =19−2=17 Mode = Most frequent observation =4 Number of observations (n)=15 (odd) Median =(