You are interested in diversity in media. You have collected information on the ethnicities of each winner of the Oscar for Best Actor. You want to show the relative quantities given to each ethnicity. What is the best way of visualising this, given your purpose?

We are interested in the outcomes of Birkbeck students in 2018. We gather information on all Birkbeck students in 2018. Is this sample data or population data?

We are interested in the outcomes of students in the U.K. in 2018. We gather information on all Birkbeck students in 2018. Is this sample data or population data?

A statistics agency wishes to use random sampling, but to ensure that the sample contains people of every ethnicity and gender identity. What extra technique should they consider using?

A person is asked how many hours a week they work in a survey. The survey is conducted by their employer, and they claim to have worked 200 hours to look impressive. What kind of error is this?

A person is asked how many hours a week they work in a survey. They count up the hours but forget that they took time off on Tuesday for a yoga class. What kind of error is this?