The class marks of a frequency distribution are as 5,10,15,20,25. What is the class corresponding to class mark 20?
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the class corresponding to class mark 20
is
17.5-22.5
is
17.5-22.5
KRIT111:
class interval are 2.5- 7.5 ,7.5-12.5, 12.5-17.5,17.5-22.5,22.5-27.5
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