Introduction to apa"


The *_apa() functions help you to format outputs of statistical tests according to guidelines of the APA (American Psychological Association).

The functions take the return value of a test function as the first argument, e.g. a call to chisq.test() is passed to chisq_apa(), which returns a formatted string.

The idea of such formatters was introduced in the schoRsch package. apa generalizes this idea by providing formatters for different output formats (text, Markdown, RMarkdown, HTML, LaTeX, docx and R's plotmath syntax).

Currently supported tests are:


Take the following test of a correlation as an example:

# Data from ?cor.test
x <- c(44.4, 45.9, 41.9, 53.3, 44.7, 44.1, 50.7, 45.2, 60.1)
y <- c( 2.6,  3.1,  2.5,  5.0,  3.6,  4.0,  5.2,  2.8,  3.8)

ct <- cor.test(x, y)

Calling cor_apa() then returns a string ready to copy-and-paste into manuscripts or presentations.


The format argument of cor_apa() allows you to specify the output format, which can be one of "text" (default), "markdown", "rmarkdown", "html", "latex", "docx" or "plotmath".

cor_apa(ct, format = "rmarkdown")

Which is printed as r apa(ct) in a RMarkdown document.

cor_apa(ct, format = "latex")
# Opens a temporary document in your word processor
cor_apa(ct, format = "docx")

# Paste output in a plot using R's plotmath syntax
plot(x, y)
abline(lm(y ~ x))
text(55, 3.9, cor_apa(ct, format = "plotmath"))

Try the apa package in your browser

Any scripts or data that you put into this service are public.

apa documentation built on May 30, 2017, 6:31 a.m.