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What's on the worksheet
- A made-up county fair wants to know what percent of last summer's visitors would come back for an extra day on a Monday.
- A made-up planetarium wants to know whether its members would support a late-night show on Fridays.
- A made-up city mails a survey to households drawn at random from its list of trash-pickup accounts.
- A made-up college's alumni office mails a survey to 1,200 graduates chosen at random from its alumni address list, asking whether they gave money to…
- A made-up town pool sold 1,500 season passes.
- A made-up beach town wants to know what percent of its adults would ride a weekend shuttle to the beach.
- A made-up music streaming company wants to estimate the mean number of hours a week that the adults in its country listen to music.
Teach it first
The free lesson teaches it with worked examples and practice problems.
Undercoverage and nonresponse: the lesson ›More Chapter 3 worksheets: Collecting data: sampling and experiments
- 3.1Observational studies and experiments
- 3.2Stratified random sample
- 3.3Systematic sample
- 3.4Cluster samples and choosing a design
- 3.5Undercoverage and nonresponse
- 3.6Units, treatments, factors and levels
- 3.7Control groups, placebos and blinding
- 3.8Random assignment and confounding
- 3.9Completely randomized design and replication
- 3.10Blocking: randomized block and matched pairs designs