Calculates the right-tail probability of quadratic forms of Gaussian variables using the skewness-kurtosis ratio matching method, modified Liu-Tang-Zhang method and Satterthwaite-Welch method. The technical details can be found in Hong Zhang, Judong Shen and Zheyang Wu (2022) "A fast and accurate approximation to the distributions of quadratic forms of Gaussian variables" <doi:10.1080/10618600.2021.2000423>.
| Version: | 0.2.1 |
| Imports: | stats |
| Published: | 2026-08-24 |
| DOI: | 10.32614/CRAN.package.Qapprox |
| Author: | Hong Zhang [aut], Judong Shen [aut], Zheyang Wu [aut, cre] |
| Maintainer: | Zheyang Wu <zheyangwu at wpi.edu> |
| BugReports: | https://github.com/ZWuLab/Qapprox/issues |
| License: | GPL-2 |
| URL: | https://github.com/ZWuLab/Qapprox |
| NeedsCompilation: | no |
| Materials: | NEWS |
| In views: | Distributions |
| CRAN checks: | Qapprox results |
| Reference manual: | Qapprox.html , Qapprox.pdf |
| Package source: | Qapprox_0.2.1.tar.gz |
| Windows binaries: | r-devel: Qapprox_0.2.1.zip, r-release: Qapprox_0.2.1.zip, r-oldrel: Qapprox_0.2.1.zip |
| macOS binaries: | r-release (arm64): Qapprox_0.2.1.tgz, r-oldrel (arm64): Qapprox_0.2.1.tgz, r-release (x86_64): Qapprox_0.2.1.tgz, r-oldrel (x86_64): Qapprox_0.2.1.tgz |
| Old sources: | Qapprox archive |
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