Know the characteristics of well-designed studies.
Sampling and Experimentation
Making Inferences and Justifying Conclusions
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Understand the differences among various kinds of studies and which types of inferences can be legitimately drawn from each.
Compare census, sample survey, experiment, and observational study.
Describe the role of randomization in surveys and experiments.
Describe the role of experimental control and its effect on confounding.
Identify bias in sampling and determine ways to reduce it to improve results.