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This type of sampling design may be either proportionate or disproportionate.
Includes convenience, purposive, and quota sampling.
An operational definition of a population that provides a basis for drawing a sample.
Assumes that members of the target population know one another.
The theoretical values of a statistic (e.g., the mean) for all possible random samples of a fixed size.
With this process, each case has a known probability of being included in the sample.
This value decreases as sample size increases.
A main purpose of this probability sampling design is to reduce the costs of data collection.
For samples of 1,000, the population percent lies within +3 or –3 percentage points of the sample estimate.
Use of a city telephone directory as a sampling frame introduces this problem.
“English-speaking Boston residents 65 years of age or older who are not living in nursing homes or long-term care facilities” is a practical definition of a ________.
Its effectiveness depends on the knowledge and skill of the researcher in selecting cases.