Question 1 The following table represents grades distribution of a class of students. Identify the class boundaries of the first and last classes. Grades of Students 0.0 - 20.0 Frequency 2 21.0 - 40.0 5 41.0 - 60.0 6 61.0 - 80.0 13 81.0 - 100.0 7 1st class: 0.5, 20.5 Last class: 80.5, 101.5 1st class: 0, 20.5 Last class: 80.5, 100.5 1st class: 0.5, 20.5 Last class: 81.5, 100.5 1st class: 0.5, 20.5 Last class: 80.5, 100.5
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