If you're seeing this message, it means we're having trouble loading external resources on our website.

If you're behind a web filter, please make sure that the domains *.kastatic.org and *.kasandbox.org are unblocked.

Main content

The language of experiments

Karina wants to determine if kale consumption has an effect on blood pressure. She recruits 100 households and randomly assigns each household to either a kale-free diet plan or a kale-based diet. At the end of two months, she plans to record the original and final blood pressures for members of each household.
Problem 1
What is the explanatory variable?
Choose 1 answer:

problem 2
What is the response variable?
Choose 1 answer:

Problem 3
What are the treatments?
Choose 1 answer:

problem 4
Who or what are the experimental units?
Choose 1 answer:

Want to join the conversation?