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Learning Goal
Part of: Make inferences and justify conclusions from sample surveys, experiments, and observational studies — 1 of 4 cluster items
Distinguish surveys, experiments, and observational studies
HSS.IC.B.3
**HSS.IC.B.3**: Recognize the purposes of and differences among sample surveys, experiments, and observational studies; explain how randomization relates to each.
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HSS.IC.B.3: Recognize the purposes of and differences among sample surveys, experiments, and observational studies; explain how randomization relates to each.
What you'll learn
- Define and distinguish a sample survey, an observational study, and a randomized experiment by their purpose and structure
- Identify the explanatory and response variables and the treatment/control structure in a described study
- Explain the two distinct roles of randomization: random selection (for generalizing to a population) and random assignment (for establishing cause and effect)
- Explain why an observational study can show association but not causation, using the idea of a confounding (lurking) variable
- Given a study scenario, classify it and state what kind of conclusion -- generalization, causation, both, or neither -- it can support
Prerequisites
Slides
Interactive presentations perfect for visual learners • 2 slide decks
Slide Video
Watch narrated slides play like a video lesson • Narrated slide playback