Package: Keng
Title: Knock Errors Off Nice Guesses
Version: 2026.3.19.9000
Authors@R: 
    person(
    given = "Qingyao",
    family = "Zhang",
    email = "qingyaozhang@outlook.com", 
    role = c("aut", "cre"),
    comment = c(ORCID = "0000-0002-6891-5982"))
Description: Miscellaneous functions and data used in psychological
        research and teaching. Keng currently has four built-in
        datasets, and could (1) scale a vector; (2) divide a vector
        into three groups, (3) compute the cut-off values of Pearson's
        r with known sample size; (4) test the significance and compute
        the post-hoc power for Pearson's r with known sample size; (5)
        conduct a priori power analysis and plan the sample size for
        Pearson's r; (6) compare lm()'s fitted outputs using R-squared,
        f_squared, post-hoc power, and PRE (Proportional Reduction in
        Error, also called partial R-squared or partial Eta-squared);
        (7) calculate PRE from partial correlation, Cohen's f, or
        f_squared; (8) conduct a priori power analysis and plan the
        sample size for one or a set of predictors in regression
        analysis; (9) conduct post-hoc power analysis for one or a set
        of predictors in regression analysis with known sample size;
        (10) randomly pick numbers for Chinese Super Lotto and Double
        Color Balls; (11) assess course objective achievement in
        Outcome-Based Education.
License: CC BY 4.0
Language: en-US
Encoding: UTF-8
Roxygen: list(markdown = TRUE)
Imports: stats
Suggests: ggplot2, knitr, rmarkdown, car, effectsize, tidyr, testthat
        (>= 3.0.0)
Config/testthat/edition: 3
URL: https://github.com/qyaozh/Keng
BugReports: https://github.com/qyaozh/Keng/issues
Depends: R (>= 3.5)
LazyData: true
VignetteBuilder: knitr
Config/roxygen2/version: 8.0.0
Repository: https://qyaozh.r-universe.dev
Date/Publication: 2026-06-24 01:38:03 UTC
RemoteUrl: https://github.com/qyaozh/keng
RemoteRef: HEAD
RemoteSha: be5e392355433c2fef473829d1114f2e736a0099
NeedsCompilation: no
Packaged: 2026-06-24 03:10:49 UTC; root
Author: Qingyao Zhang [aut, cre] (ORCID:
    <https://orcid.org/0000-0002-6891-5982>)
Maintainer: Qingyao Zhang <qingyaozhang@outlook.com>