Question

Following are the marks obtained by 40 students of class 9 in an examination . Construct the
frequency distribution table and calculate
i. Quartile deviation and its coefficient
ii. Mean deviation from median and its coefficient
iii. Standard deviation and coefficient of variation
40 , 50 , 80 , 70 , 40 , 60 , 80 , 100 , 50 , 90 , 60 , 70 , 40 , 70 , 100 , 80 , 90 , 60 , 50 , 70 , 90
, 80 , 100 , 50 , 60 , 90 , 40 , 70 , 80 , 60 , 70 , 60 , 80 , 70 , 60 , 70 , 80 , 90 , 60 , 70

Answer 1

Answer:

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