A student noticed that passing 'F' for 'FALSE' did not have an effect when using functions in the stats base package.
Example: > pt(q=1.12, df=12, lower.tail=TRUE) [1] 0.8576851 > pt(q=1.12, df=12, lower.tail=F) [1] 0.8576851 > pt(q=1.12, df=12, lower.tail=FALSE) [1] 0.1423149 I couldn't replicate the problem. Re-installing and updating R on their machine had no effect. Does anybody know what could be causing this? sessionInfo(): R version 3.2.2 (2015-08-14) Platform: x86_64-apple-darwin13.4.0 (64-bit) Running under: OS X 10.11 (El Capitan) locale: [1] en_GB.UTF-8/en_GB.UTF-8/en_GB.UTF-8/C/en_GB.UTF-8/en_GB.UTF-8 attached base packages: [1] stats graphics grDevices utils datasets [6] methods base loaded via a namespace (and not attached): [1] tools_3.2.2 Stats package: Package: stats Version: 3.2.2 Priority: base Title: The R Stats Package Author: R Core Team and contributors worldwide Maintainer: R Core Team <r-c...@r-project.org> Description: R statistical functions. License: Part of R 3.2.2 Built: R 3.2.2; x86_64-apple-darwin13.4.0 Liam [[alternative HTML version deleted]] _______________________________________________ R-SIG-Mac mailing list R-SIG-Mac@r-project.org https://stat.ethz.ch/mailman/listinfo/r-sig-mac