1) How many class intervals are there? a) 5 b) 6 c) 7 2) The lowest class interval is 21 - 25 and the highest interval is 36-40 a) True b) False 3) What is the class size? a) 5 b) 6 c) 7 4) 26-30 has the highest frequency while 31-35 has the lowest frequency. a) True b) False 5) What is the class mark for the class interval 21 – 25? a) 21 b) 22 c) 23

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