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2. (a) Data in ascending order : 2,5,8,10,10,10,11,12,14,15,16,16,17,19,19,20,20,20,20,21,21,22,23,23,24,25,25,25,28,28,29,30,30,30.
(b) Highest marks = 30
(c) Lowest marks = 2
(d) range = highest - lowest = 30-2= 28
(e) 7 students failed since 7 out of 35 scored less than 12.
(f) 6 students
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