The case against retrospective statistical power analyses with an introduction to power analysis

@article{Nakagawa2004TheCA,
  title={The case against retrospective statistical power analyses with an introduction to power analysis},
  author={Shinichi Nakagawa and Tisha M Foster},
  journal={acta ethologica},
  year={2004},
  volume={7},
  pages={103-108}
}
Statistical power analysis is an important tool for planning an experiment because this type of analysis allows researchers to identify an appropriate sample size for a particular experimental design. In recent years, it seems many biology journals (see Table 1 in Hoenig and Heisey 2001) have been encouraging researchers to calculate statistical power after their experiments when they have obtained non-significant results (hereafter, termed “retrospective power calculation or analysis” as… CONTINUE READING

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