It is unethical and a waste of time and resources to embark on a study when there is a high chance of a false negative result (Type II error). The commonest cause of this is having a sample size that is too small
OVERVIEW In general terms, validity is “the quality of being true or correct”, it refers to the strength of results and how accurately they reflect the real world. Thus ‘validity’ can have quite different meanings depending on the context! Reliability…
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