AP statistics unit 4 vocabulary Practice Guide 2023/2024.

observational study - correct answer observe individuals and collect data without any interference with conditions what are the two different types of observational studies - correct answer retrospective and prospective Retrospective observational study - correct answer an observational study that has already occured prospective observational study - correct answer an observational study being studied as it ocurs experiment - correct answer deliberately impose some treatment on individuals to observe their responses confounding variable - correct answer things that get in the way simulation - correct answer mimic a situation and is alternative method for producing data when it may not be possible to carry out the experiment population - correct answer the entire group from which you want to collect data