7-9 9-11 2 2. A survey conducteal uby a group of student üsguen qs as family size 1-3 3-55-7 54 8 Number of families 7 12 1 The mean of data is (6 4. 2 (d) None of these 6.8 5.4
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answers is 5 mean is 5 that's your answer
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