Selecting an appropriate sample is crucial for the validity of the study. Consider the following:
- Sample Size: Ensure the sample size is adequate to detect a statistically significant effect if one exists. - Sampling Method: Choose between probability sampling (e.g., random sampling) and non-probability sampling (e.g., convenience sampling) based on the study design. - Inclusion and Exclusion Criteria: Clearly define who will be included or excluded from the study to ensure the sample is representative of the population being studied.
