Statistics Quest

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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

Robust salary summaries

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For base_salary_sar in the salaries dataset, calculate the 10% trimmed mean and the raw (unscaled) MAD. Give both in SAR to 1 decimal place.

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