R Observatory: Metrics for missalpha version 0.2.0

Balamuta, James Joseph

doi:10.5281/zenodo.21843040

missalpha

0.2.0Package record

Find Range of Cronbach Alpha with a Dataset Including Missing Data

0packages depend

2.2Kdownloads / year

81.6%test coverage

13/13flavors OK

Overview

About

Maintained by Biying ZhouCRAN page ↗

Provides functions to calculate the minimum and maximum possible values of Cronbach's alpha when item-level missing data are present. Cronbach's alpha (Cronbach, 1951 doi:10.1007/BF02310555) is one of the most widely used measures of internal consistency in the social, behavioral, and medical sciences (Bland & Altman, 1997 doi:10.1136/bmj.314.7080.572; Tavakol & Dennick, 2011 doi:10.5116/ijme.4dfb.8dfd). However, conventional implementations assume complete data, and listwise deletion is often applied when missingness occurs, which can lead to biased or overly optimistic reliability estimates (Enders, 2003 doi:10.1037/1082-989X.8.3.322). This package implements computational strategies including enumeration, Monte Carlo sampling, and optimization algorithms (e.g., Genetic Algorithm, Differential Evolution, Sequential Least Squares Programming) to obtain sharp lower and upper bounds of Cronbach's alpha under arbitrary missing data patterns. The approach is motivated by Manski's partial identification framework and pessimistic bounding ideas from optimization literature.

Install

R (CRAN)Ubuntu (r2u)Fedora (COPR)openSUSE (OBS)

install.packages("missalpha", repos = "https://cloud.r-project.org/")

Installs the current CRAN release. Prebuilt binaries on Windows and macOS.

Release

# enable cranapt (r2u) if it is not already set up, then install
grep -rqs r2u.stat.illinois.edu /etc/apt/sources.list /etc/apt/sources.list.d/ \
  || curl -fsSL https://raw.githubusercontent.com/eddelbuettel/r2u/master/inst/scripts/add_cranapt_noble.sh | sudo bash
sudo apt install -y r-cran-missalpha

Fast Ubuntu binaries via r2u (no compilation). The cranapt setup runs once and is skipped when it is already enabled. We list this channel from recorded r2u download activity rather than from a live index of the repository, so treat it as last known rather than guaranteed.

bspm (used by r2u) also needs make: sudo apt install make

# enable the iucar/cran COPR if it is not already present, then install
ls /etc/yum.repos.d/*iucar*cran*.repo >/dev/null 2>&1 \
  || sudo dnf copr enable -y iucar/cran
sudo dnf install -y R-CRAN-missalpha

RPMs from the iucar/cran COPR, rebuilt from CRAN.

For install.packages() integration in R, also: sudo dnf install R-CoprManager

# add the autoCRAN OBS repo (Tumbleweed) if it is missing, then install
zypper -q lr | grep -qi autoCRAN \
  || sudo zypper addrepo https://download.opensuse.org/repositories/devel:/languages:/R:/autoCRAN/openSUSE_Tumbleweed/devel:languages:R:autoCRAN.repo
sudo zypper install -y R-missalpha

RPMs auto-built from CRAN on openSUSE OBS (Tumbleweed). We list this channel from recorded autoCRAN download activity rather than from a live index of the repository, so treat it as last known rather than guaranteed.

Health

CRAN checks

13OK

CRAN check page ↗

Slowest check: 7.8 min · r-oldrel-macos-x86_64

Status changes

OK13 OK2026-08-05
NOTE12 OK, 1 NOTE2026-08-01
OK14 OK2026-03-10

Advisories

none known

How this is measured·How advisories are found

Documentation

In release 0.2.0

READMENoVignettesNoNEWSNoCitation fileNoWebsitenot declared in DESCRIPTION

Help pages: 13
Examples that run: 67%2 run in a plain check · 1 only when donttest examples are enabled (R CMD check --as-cran)
Exported functions with examples: 17%
Documented parameters: 100%
Return-value docs: 100%
Help pages citing references: 0%

How these are measured

Downloads

2.2K

CRAN downloads in the past year

Rank #23,350 · ~6/day · ~187/mo

Releases R versions

Daily download trend is not available in this view yet.

21230 days

55190 days

2.2K1 year

Compare downloads with other packages →

Also on66 r2u2 autocran

How downloads are counted

Dependencies

Declared dependencies

4 external dependencies (excludes base and recommended)

Installing missalpha adds 9 packages (6 with compiled code, 11 MB of source tarballs). Heaviest: GA 4.8 MB, nloptr 2.1 MB, Rcpp 1.8 MB.

Depends (1)

R >= 3.1.0

Imports (4)

GA DEoptim nloptrstats

LinkingTo (0)

none

Suggests (1)

testthat

Enhances (0)

none

Dependency license breakdown →

Reverse dependencies

0direct

0indirect

Nothing depends on this yet.

How these are counted

Code & Tests

Datasets

People & History

People (2)

Biying Zhou

Author, Maintainer since 0.1.0 (2025)

Feng Ji

Author

Releases (2)

Pick two releases to compare their code metrics.

R
R 4.6.0 released · 2026-04-24
0.2.0Latest
record
2025-10-29 · current release · diff ↗
0.1.0
record
2025-09-09
R
R 4.5.0 released · 2025-04-11

Package metadata

First published: 2025-09-09
Total releases: 2 / 1 yrs
License: MIT + file LICENSE OSI
Minimum R: ≥ 3.1.0
Bundled data: 0.7 KB / 2 files
Download size: 19 KB

Cite

Cite this package

Run in R for the authors' preferred citation:

citation("missalpha")

Format

Zhou, B., & Ji, F. (2025). missalpha: Find Range of Cronbach Alpha with a Dataset Including Missing Data (Version 0.2.0) [Computer software]. https://doi.org/10.32614/CRAN.package.missalpha

This package has no citation file, so citation() returns this entry built from DESCRIPTION.

Cite the R Observatory

For a number measured here: a download total, a coverage figure, an archival date.

Format

APA

Balamuta, J. J. (2026). R Observatory: Metrics for missalpha version 0.2.0 [Data set]. HJJB, LLC. Data release v2026-10-21. https://doi.org/10.5281/zenodo.21843040

From data release v2026-10-21, which the citation names so these numbers can be found later. More on citing and the projects behind them.

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