AP Statisticsmediummcq1 pt
Which design best controls for a variable like age that affects response?
A.blocking by age
B.using more subjects only
C.removing the control group
D.shorter measurements
Explanation
Core Concept
Blocks hold age constant within groups.
Correct Answer
Ablocking by age
More Unit 3: Collecting Data practice questions
- mediumA matched pairs design comparing two tire brands on the same cars controls for
- mediumWhich pair correctly matches sampling and assignment?
- easyWhy can't an observational study prove causation?
- easyWhich study can support causal conclusions?
- easyTreatments in an experiment are
Practice more AP Statistics questions with full explanations
Practice Unit 3: Collecting Data Questions →