![]() For instance, it is possible that measurement is valid but not reliable or is reliable but not valid. Reliability and validity, though closely related, are independent of one other. Due to this, researchers account for error when planning research designs and methods to attain as much reliability and validity as possible. The scientific community uses these two concepts to get a fair estimate of how effective the research process has been in gathering correct results of a scientific study.Įrror is ever present, so perfect reliability and validity are not achievable. To measure the quality of an experiment, researchers use two concepts: reliability and validity. ![]() The usefulness of a research study in any field depends upon the quality of both the methods applied and the results produced.
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