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The Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA), or Superfund, was the first legislative act aimed at hazardous waste sites in the United States.
Probability Sampling
Sampling based on random selection of the sample units.
Convenience Sampling
Sampling based on convenience to the researcher.
Judgmental Sampling
A non-random sampling technique where the researcher selects units to be sampled based on their knowledge and professional judgment.
Network Sampling
A method of sample selection used in research that involves choosing participants through networks or connections within a specific population.
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