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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Practice, difficulty 2 of 3

Which mean?

Not started

For each question, choose the kind of mean that answers it.

Average yearly growth of a city's population, given five yearly growth rates
A student's grade point average when courses carry different credit hours
Average daily temperature over a week
Return of a portfolio holding 70% in one fund and 30% in another over the same month
Average annual return of a fund over ten years, for someone who stayed invested throughout
Average number of calls handled per agent in a contact centre