Maths problem: how to do (b), thanks?
回答 (1)
2020-02-02 6:17 pm
✔ 最佳答案
(b) 3rd quartile = 20∵ 3rd quartile is the median of the upper half of the ages,
∴ percentage of ages not over the 3rd quartile = 75％
=> percentage of participants not over 20 = 75％
收錄日期: 2021-04-24 07:56:30
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