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Choose a topic, a skill or a difficulty. Calculation exercises have new versions with fresh numbers once you have solved them, so you can practise the method rather than memorise an answer.

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Application, difficulty 2 of 3

Flagged commutes

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Using commute_min in the commute dataset, find the upper fence (1.5 × IQR rule, type 7 quartiles), the number of employees above it, and how many of those are also above the outer fence $Q_3 + 3 \times \text{IQR}$ .

Data: commute · Open in the lab to explore and calculate.