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Question -

The mid-value of a class interval is 42. If the class size is 10, then the upper and lower limits of the class are
(a) 47 and 37
(b) 37 and 47
(c) 37.5 and 47.5
(d) 47.5 and 37.5



Answer -

Mid value = 42 and class size =10
тИ┤ Upper limit = 42 + 10/2 = 42 + 5 = 47
and lower limit = 42 тАУ 10/2 = 42 тАУ 5 = 37
Upper class limit and lower class limits are 47, 37 (a)

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