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cumulative frequency number of students cumulative frequency number of students 80 70 60 50 40 30 20 10 Boundary 9.5 14.5 19.5 24.5 29.5 34.5

cumulative frequency number of students

cumulative frequency number of students 80 70 60 50 40 30 20 10

Boundary

9.5 14.5

19.5 24.5

29.5 34.5

39.5

he sample size is

Round answer to the nearest ten.

(b) The first class interval is

Caution: Class interval, not class boundary, is required.

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