Prepare the frequency array of marks obtained by 25 students of a class in economics test

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collectionofdata

#1

Prepare the frequency array of marks obtained by 25 students of a class in economics test 20, 15, 20, 30, 40, 25, 25, 30, 40, 20, 35, 35, 50, 15, 50, 25, 40, 30, 50, 25, 30, 30, 15, 45, 40. As in the question marks of 25 students are given in the individual series, for converting individual series into frequency array, tally bar should be prepared.


#2

TheFrequency array of given data is shown below: