For the following data Set, Calculate the Range, 5 Class intervals, Frequency, Relative Frequency and Cum Frequency. Show your calculations. 30 19 65 18 20 35 19 51 36 36 31 45 35 40 50 15 29 32 39 57 35 21 21 29 40 45 37 46 49 26 39 30 49 11 20 55 61 22 23 48