An R package for one-way statistical analyses.
There are also other nice alternatives such as
agricolae,
car,
onewaytests,
and other friends.
You can install the package from CRAN with:
install.packages("oneway")
or the development version from GitHub with:
if (!require("pak")) install.packages("pak")
# pak::pak("P10911004-NPUST/oneway")
install.packages("oneway", repos = c('https://p10911004-npust.r-universe.dev', 'https://cloud.r-project.org'))
pairwise_comparison(O_O_O, val ~ grp)