Practice and reflection

Check the idea, then explain it.

Try these questions after the lessons. Responses remain in your browser and are not submitted. The questions are informal checks, not a graded or validated assessment.

1. Which is usually appropriate for comparing counts across categories?
2. What is the median of 1, 3, 8?
3. Does a large sample automatically eliminate selection bias?

Transfer your understanding

For each question, explain why one alternative is incorrect. Then create your own example that illustrates the correct idea. Recognition is a starting point; explanation shows how the ideas connect.

Ready for a longer task?

Apply all three lessons in the guided project →