R CMD check fails with errors, warning and notes

[MarkoBarzic]

NOTE
windsorize: no visible global function definition for 'quantile'
Undefined global functions or variables:
quantile
Consider adding
importFrom("stats", "quantile")
to your NAMESPACE file

WARNING
Undocumented arguments in documentation object 'meanimpute'
'x'

Undocumented arguments in documentation object 'windsorize'
'x' 'p'

Functions with \usage entries need to have the appropriate \alias
entries, and all their arguments documented.
The \usage entries must correspond to syntactically valid R code.
See chapter 'Writing R documentation files' in the 'Writing R
Extensions' manual.

WARNING
LaTeX errors when creating PDF version.
This typically indicates Rd problems.

ERROR
Re-running with no redirection of stdout/stderr.
Hmm ... looks like a package
Error in texi2dvi(file = file, pdf = TRUE, clean = clean, quiet = quiet, :
pdflatex is not available