Find the mean of the data given below

MATHEMATICS · Single correct · GCSE · Mathematics · Statistics · Statistics

Problem

Find the mean of the data given below. Class interval (in cm): 120–140, 140–160, 160–180, 180–200, 200–220 Frequency: 4, 5, 6, 3, 2 (a) 166166 (b) 174174 (c) 164164 (d) 154154

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