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What is class size?
Solution
Overlapping intervals are $0 – 10, 10 – 20, 20 – 30, etc.$
The class size of the overlapping interval $10 - 20$.
Actual upper limit $–$ Actual lower limit. = $20 – 10. = 10$.
Non-overlapping intervals are $1 – 10, 11 – 20, 21 – 30,$ etc.
The class size of the nonoverlapping class interval $1 – 10$
= Actual upper limit $–$ Actual lower limit
= $10.5 – 0.5 = 10$.
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