Examlex
The extent of need for a program or service always is accurately gauged by the amount of expressed demand for that program or service.
Systematic Sampling
Sampling by selecting every nth unit from a population.
Snowball Sampling
A non-probability sampling technique where existing study subjects recruit future subjects from among their acquaintances.
Nonprobability Sampling
A sampling technique where the samples are gathered in a process that does not give all the individuals in the population equal chances of being selected.
Lotteries
Games of chance where winners are selected by drawing lots, often used as a means of raising funds.
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