Determining the Required Sample Size
Introduction to Statistical Analysis of Required Sample Size
Determining the appropriate sample size is one of the most crucial steps in planning a research study. Without an adequate sample, results may be statistically unreliable, interpretations may be limited, and conclusions could be misleading. The goal is to find an optimal balance between scientific precision and practical feasibility — the sample should be large enough to detect expected effects but not excessively large to waste resources.
Calculating the sample size is an essential step in every statistical analysis.
