2. The following are the weights (in grams) of 50 mineral samples obtained in the field trip in Bataan. 136 92 115 121 137 132 120 104 125 118 119 115 101 82 108 110 133 135 89 129 127 103 110 118 88 104 137 120 88 126 133 126 102 119 142 129 126 132 118 113 126 100 119 106 125 129 124 95 97 117 Construct a group of frequency distribution of the data using 7 classes. (142- 82)/7=8.57=9

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