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AP Statistics
Unit 3 – Collecting Data
Topic 3.5
To make sure that the results of an experiment remain unbiased, it is important to:
Measure the response variables before giving treatments.
Randomly assign treatments to experimental units.
Manipulate the levels of the explanatory variables.
Use a placebo group as the only treatment group.
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AP Statistics - 3.5 Introduction to Experimental Design
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Cram Mode
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© 2024 Fiveable Inc. All rights reserved.
AP® and SAT® are trademarks registered by the College Board, which is not affiliated with, and does not endorse this website.
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