Unit 3: Collecting Data
Sampling methods, observational studies vs. experiments, randomization, and bias
What You'll Learn in Unit 3: Collecting Data
Sampling methods, observational studies vs. experiments, randomization, and bias
This section contains 4 topics with 0 subtopics, 12 practice problems and 36 flashcards. Each topic includes comprehensive written notes, worked examples with detailed solutions, and interactive lessons for hands-on practice.
Topics Covered
- Sampling Methods — Compare simple random sampling, stratified, cluster, and systematic sampling methods.
- Observational Studies vs Experiments — Distinguish between observational studies and experiments, and understand causation vs. association.
- Experimental Design — Design experiments using control, randomization, replication, and blocking.
- Bias in Sampling and Surveys — Identify sources of bias in sampling and surveys including voluntary response and convenience sampling.
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All Topics in Unit 3: Collecting Data
Sampling Methods
Compare simple random sampling, stratified, cluster, and systematic sampling methods.
Observational Studies vs Experiments
Distinguish between observational studies and experiments, and understand causation vs. association.
Experimental Design
Design experiments using control, randomization, replication, and blocking.
Bias in Sampling and Surveys
Identify sources of bias in sampling and surveys including voluntary response and convenience sampling.