How to Calculate an Adequate Sample Size?
R. L. Sapra
Abstract
Abstract The determination of an adequate sample size is a prerequisite for any research programme. A study concluded on the basis of a smaller sample size than required is termed an ‘underpowered study’ and its reliability is questionable. Such a study may lead to faulty conclusions and consequent waste of resources. On the other hand, a study with a larger sample size than required may enhance its reliability but unnecessarily consumes expensive resources, takes a long time, and may even put the subjects to various health hazards. Thus, the researcher should look for an adequate sample size that can serve the purpose of this study.
Topics & Concepts
Sample size determinationReliability (semiconductor)Sample (material)Reliability engineeringStatisticsComputer sciencePsychologyEngineeringMathematicsChemistryPower (physics)Quantum mechanicsChromatographyPhysicsStatistical Methods in EpidemiologyDisaster Response and Management