Statistics Quest

Practice

Practise until it sticks

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 flight delays

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Apply the 1.5 × IQR rule to delay_min in the flight_delays dataset (2 500 departures). How many departures are flagged, and what percentage of all departures is that (1 decimal place)?

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