question_answer

  For the following distributions

Classes	0-5	5-10	10-15	15-20	20-25
Frequency	10	15	12	20	9

The sum of lower limits of the median class and modal class is (a) 15                     (b) 25 (c) 30                    (d) 35

Answer:

  (b)

Class	Frequency	Cumulative frequency
0-5 5-10 10-15 15-20 20-25	10 15 12 20 9	10 25 37 57 66

Now,                     Median lies in the class Mode lies in the class Sum of the lower limit of median and modal classes