Bias, randomization & controls

This quiz is separate from the lesson so you can finish learning first, then test what you retained.

Lesson checkpoint

Bias, randomization & controls checkpoint

This checkpoint tests the lesson you just completed. Passing marks it complete and unlocks the next course step.

Get every question correct to pass.

1. What is randomization mainly trying to reduce?

Systematic baseline differences between treatment groupsAll measurement errorPublication biasEvery adverse event

2. What does a control group help answer?

What would have happened under a relevant comparison conditionWhether the molecule existsWho funded the paperWhether the study was published

3. Does randomization eliminate every source of bias?

NoYes

Educational information only. Not medical advice.