retrodesign (0.1.0)

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Tools for Type S (Sign) and Type M (Magnitude) Errors.

https://github.com/andytimm/retrodesign
http://cran.r-project.org/web/packages/retrodesign

Provides tools for working with Type S (Sign) and Type M (Magnitude) errors, as proposed in Gelman and Tuerlinckx (2000) and Gelman & Carlin (2014) . In addition to simply calculating the probability of Type S/M error, the package includes functions for calculating these errors across a variety of effect sizes for comparison, and recommended sample size given "tolerances" for Type S/M errors. To improve the speed of these calculations, closed forms solutions for the probability of a Type S/M error from Lu, Qiu, and Deng (2018) are implemented. As of 1.0.0, this includes support only for simple research designs. See the package vignette for a fuller exposition on how Type S/M errors arise in research, and how to analyze them using the type of design analysis proposed in the above papers.

Maintainer: Andrew Timm
Author(s): Andrew Timm [cre, aut], Andrew Gelman [ctb, cph], John Carlin [ctb, cph]

License: MIT + file LICENSE

Uses: ggplot2, testthat, gridExtra, knitr, rmarkdown

Released 6 months ago.


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