Default is a dataset that is in ISLR package


library(ISLR)    # install.packages("ISLR")
data(Default)    # see the data
Default

?Default  # see explanation for variables

#  A data frame with 10000 observations on the following 4 variables.
#
# 1 default (factor)  A factor with levels No and Yes indicating whether the customer defaulted on their debt
# 2 student (factor)  A factor with levels No and Yes indicating whether the customer is a student
# 3 balance (numeric) The average balance that the customer has remaining on their credit card after making their monthly payment
# 4 income  (numeric) Income of customer
#
# column "default" is the respoinse variable.