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Understanding Statistical Testing

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  • Peter J. Veazie

Abstract

Statistical hypothesis testing is common in research, but a conventional understanding sometimes leads to mistaken application and misinterpretation. The logic of hypothesis testing presented in this article provides for a clearer understanding, application, and interpretation. Key conclusions are that (a) the magnitude of an estimate on its raw scale (i.e., not calibrated by the standard error) is irrelevant to statistical testing; (b) which statistical hypotheses are tested cannot generally be known a priori; (c) if an estimate falls in a hypothesized set of values, that hypothesis does not require testing; (d) if an estimate does not fall in a hypothesized set, that hypothesis requires testing; (e) the point in a hypothesized set that produces the largest p value is used for testing; and (f) statistically significant results constitute evidence, but insignificant results do not and must not be interpreted as evidence for or against the hypothesis being tested.

Suggested Citation

  • Peter J. Veazie, 2015. "Understanding Statistical Testing," SAGE Open, , vol. 5(1), pages 21582440145, January.
    • Handle: RePEc:sae:sagope:v:5:y:2015:i:1:p:2158244014567685
    DOI: 10.1177/2158244014567685
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    References listed on IDEAS

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