The amounts of drops of water in drip irrigation were registered from 80 sample drip holes in one day and the data are as follows. 77 99 104 87 108 86 91 87 92 77 103 104 96 92 92 97 79 97 101 95 113 85 84 112 78 73 86 77 107 67 88 76 77 87 114 97 102 101 98 105 67 67 94 118 79 68 64 103 87 97 73 92 78 95 86 99 87 76 99 112 68 103 98 63 101 101 76 67 79 84 87 116 102 81 76 88 98 93 82 78
a. Find the median from the raw data.
b. Construct a grouped frequency distribution, with 10 classes and find the median