Answer:
A sampling scheme is a detailed description of the data that will be collected and how it will be collected. In PPC, we are faced with two situations in which we must create sampling techniques. The first is when we're doing a scientific study.
The research design is the overarching method you adopt to combine the various components of the study in a logical and cohesive manner, ensuring that you will effectively address the research problem; it is the blueprint for data collecting, measurement, and analysis.
Explanation:
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