Prepare a frequency distribution of the marks obtained out of 100 for the following observations: (Prepare both Exclusive Method and Inclusive Method)
15 45 40 42 50 60 62 68 70 42 75 75 80 81 25 26 31 32 78 45 31 45 42 43 55 56 78 80 81 62 60 62 58 69 70 45 50 56 72 58 75 62 62 65 60 70 35 37 40 55