Question

11. The frequency distribution table of marks obtained in Bengali of 80 students of Std-X is as follows: Class interval 91- 100 31-40 41-50 51-60 61-70 71-80 81-90 Frequency 8 12 17 23 10 7 3 2
a) Determine the mid-value of median class.
b) Determine the mean by using the short-cut method.
c)Draw the ogive curve of the given data.​

Answer 1

Answer:

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Step-by-step explanation:

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