The class marks of a frequency distribution are given as follows: 15, 20, 25, … The class corresponding to the class mark 15 is:

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Question:The class marks of a frequency distribution are given as follows: 15, 20, 25, … The class corresponding to the class mark 15 is:

1. 12.5 – 17.5

2. 17.5 – 22.5

3.18.5 – 21.5

4. 19.5 – 20.5

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  1. The class marks of a frequency distribution are given as follows: 15, 20, 25, … The class corresponding to the class mark 15 is:
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