Page 1 of 3
Download
Get this sheet
SubscriptionOpen any sheet in any course, up to 40 a month, keys included. Or $40 month to month.
$25/mo, billed yearly
SubscribeTry one first: a free Chapter 1 worksheet (PDF, no sign-in).
What's on the worksheet
- A power company runs 372 wind turbines (made-up numbers):
- A self-storage company rents units in two buildings (made-up numbers).
- A regional theater has 12,000 subscribers (made-up numbers):
- A city zoo has 2,750 individual members, 600 family members and 540 patron members (made-up numbers).
- A made-up volunteer fire company has 9 members:
- A city water utility wants to estimate the percent of its 18,000 households that have low water pressure in the morning (made-up numbers).
Teach it first
The free lesson teaches it with worked examples and practice problems.
Stratified random sample: 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