Data was collected for 300 fish from the North Atlantic. The length of the fish (in mm) is summarized in the GFDT below.  Lengths (mm)   Frequency 160 - 161 1 162 - 163 16 164 - 165 71 166 - 167 108 168 - 169 83 170 - 171 18 172 - 173 3 What is the class midpoint for the first class? class midpoint =

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