Cross Tabulation
Usage
table(x, ..., exclude = c(NA, NaN))
Arguments
x
|
an object which can be interpreted as a factor (including
character strings) or a list
whose components can be so interpreted
|
...
|
further objects to be used as factors
|
exclude
|
values to use in the exclude argument of factor
when interpreting non-factor objects
|
Description
table uses the cross-classifying factors provided as arguments
to build a contingency table of the counts at each combination
of factor levels.Examples
## Simple frequency distribution
table(rpois(100,5))
data(warpbreaks)
attach(warpbreaks)
## Check the design:
table(wool,tension)
data(state)
table(state.division, state.region)
data(airquality)
attach(airquality)
# simple two-way contingency table
table(cut(Temp, quantile(Temp)), Month)