Unit 3: Collecting Data
Essential Questions:
- What are various types of sample surveys?
- How do sample surveys, experiments, and observational studies differ?
- What are the essential components of a good experiment?
Content:
- Randomness
- Simple random samples, stratified samples, and cluster samples
- Experiments
- Observational studies
Skills and Processes:
- Generating random numbers
- Conducting SRS, stratified, and cluster sampling
- Understanding the problems associated with censuses
- Understanding the main components of experimental design, i.e., control, randomization, replication, and blocking
- Understanding that only an experiment, rather than an observational study, can help to establish causation