Implements confidence interval and sample size methods that are especially useful in psychological research but are also useful in educational, social science, business, and biological research. This package includes more than 100 confidence interval functions and more than 80 sample size functions for 1-group, 2-group, paired-samples, and multiple-group designs and for a variety of parameters including means, medians, proportions, slopes, standardized mean differences, standardized linear contrasts of means, and several measures of correlation and association. The sample size functions can be used to approximate the sample size needed to estimate a parameter or function of parameters with desired confidence interval precision or to perform a variety of hypothesis tests (directional two-sided, equivalence, superiority, noninferiority) with desired power. For details about these methods see: Statistical Methods for Psychologists, Volumes 1 – 4, <https://dgbonett.sites.ucsc.edu/>.
| Version: | 2.0.0 |
| Imports: | utils, stats, semTools, Rdpack, mathjaxr |
| Suggests: | MASS, testthat (≥ 3.0.0) |
| Published: | 2026-07-11 |
| DOI: | 10.32614/CRAN.package.statpsych |
| Author: | Douglas G. Bonett [aut, cre], Robert J. Calin-Jageman [ctb] |
| Maintainer: | Douglas G. Bonett <dgbonett at ucsc.edu> |
| BugReports: | https://github.com/dgbonett/statpsych/issues |
| License: | GPL-3 |
| URL: | https://github.com/dgbonett/statpsych/, https://dgbonett.github.io/statpsych/ |
| NeedsCompilation: | no |
| Materials: | README, NEWS |
| CRAN checks: | statpsych results |
| Reference manual: | statpsych.html , statpsych.pdf |
| Package source: | statpsych_2.0.0.tar.gz |
| Windows binaries: | r-devel: statpsych_2.0.0.zip, r-release: statpsych_2.0.0.zip, r-oldrel: statpsych_2.0.0.zip |
| macOS binaries: | r-release (arm64): statpsych_2.0.0.tgz, r-oldrel (arm64): statpsych_2.0.0.tgz, r-release (x86_64): statpsych_2.0.0.tgz, r-oldrel (x86_64): statpsych_2.0.0.tgz |
| Old sources: | statpsych archive |
| Reverse imports: | esci |
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