catdes()

catdes()

catdes() is a function provided in the FactoMineR package in R-Studio.

It performs categorical data description, analyzing relationship between a categorical variable (the response, or target variable) and all the other variables (predictors).

Usage

Let there be a variable "hobbies"

library(FactoMineR)

# Example dataset
data(hobbies)
result <- catdes(hobbies, num.var = 1)  # Variable 1 as the response
result

We use the function catdes(hobbies, num.var = 1)

The last command is telling to apply the catdes command to the variable "hobbies". It is also stating the target variable to be the first one: 1.

Interpreting results

The catdes() function returns 4 kind of results that interest us, grouped in 4 variables.

#quanti.var\ #quanti\ #test.chi2\ #category\

$quanti.var

The output of catdes(...) has been assigned to a variable named "result".

result$quanti.var

The result will look something like this:

$quanti.var
                 eta2      p.value
Sepal.Length    0.618     <2e-16
Sepal.Width     0.222      0.003
Petal.Length    0.930     <2e-16
Petal.Width     0.900     <2e-16

So:

$quanti

$test.chi2

$category