Question

change the following data into less than type
distribution and draw its ogive - Hence
find the median of the data

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Answer 1

steps for adjustment class are as followed.

1. find the difference of the range of first class mark.for eg ,30-39=9
2. then divide it by 2 ,9/2=4.5
3. add the value to the first range and then subtract the value to the second range,............(30+4.5) to (39-4.5)
4. repeat it with all to get the adjusted class.

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