Statistics

Table of contents

1. Power analysis

Power analysis

ADD CONTENT

Two R packages for running power analyses are:

• pwr, which is sufficient for most inferential statistics (e.g., t-tests, ANOVA).
• simr, which is specifically for mixed effects models. It calculates power by simulating data and results from a model you specify.

Readings

• Champely, S., Ekstrom, C., Dalgaard, P., Gill, J., Weibelzahl, S., Anandkumar, A., Ford, C., Volcic, R., & De Rosario, H. (2017). pwr: Basic functions for power analysis.
• Cohen, J. (1992). A power primer. Psychological bulletin, 112(1), 155.
• Green, P., & MacLeod, C. J. (2016). SIMR: an R package for power analysis of generalized linear mixed models by simulation. Methods in Ecology and Evolution, 7(4), 493-498.
• Simonsohn, U. (2015). Small telescopes: Detectability and the evaluation of replication results. Psychological science, 26(5), 559-569.