4.3.1.1 Sampling: Sample Plan Power Calculations

The sampling plan provides a complete description of study participants and how they will be selected. A sampling plan can help prevent problems with internal and external study validity, so the sampling plan and processes should be clearly described. A power analysis is a calculation that estimates the likelihood that there will be significant results. There are different techniques for calculating a power analysis. The details of the study determine which power analysis formula will be used. The details of the study include the amount and types of information collected and the desired level of explanation the study hopes to provide.

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