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10 The following are the marks obtained by 50 students in statistics. Marks Number of Students 10 marks or less 4 20 marks or less

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10 The following are the marks obtained by 50 students in statistics. Marks Number of Students 10 marks or less 4 20 marks or less 30 marks or less 30 40 marks or less 40 50 marks or less 47 60 marks or less 50 Compute (i) Range of marks obtained by middle 80% of the students; (ii) The median

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