The weight in kg, of 50 students are given below : $40,45,55,62,50,51,56,69,61,36,60,56,69,38,35,63,57,50,57,48,40,63,53,64,47,42,56,51,42,60,55,39,64,57,64,44,66,35,59,59,73,62,49,63,37,63,54,72,44,60$ Find the mean , median and mode respectively for the given data.