Question

Marks below 10 20 30 40 50 60 70 80 90
No. of students 15 35 60 80 96 127 156 190 200
Taking a scale of 2 cm = 10 marks on one axis and 2 cm = 20 students on another, draw the ogive
and estimate:
(1) the median mark.
(ii) the inter-quartile range.​

Answer 1

Answer:

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