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Choose the correct answer in each of the following questions: The class marks of a frequency distribution are 15, 20, 25, 30, .... The class corresponding to the class mark 20 is (a) 12.5-17.5 (b) 17.5-22.5 (c) 18.5-21.5 (d) 19.5-20.5

Answer»

Choose the correct answer in each of the following questions:
The class marks of a frequency distribution are 15, 20, 25, 30, .... The class corresponding to the class mark 20 is
(a) 12.5-17.5
(b) 17.5-22.5
(c) 18.5-21.5
(d) 19.5-20.5



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