Before starting with data analysis through the logistic regression, we conduct an exploratory analysis to understand how the data is distributed and extract preliminary knowledge. Let's start by checking the dataset using the str() function. This function provides a compact display of the internal structure of an object. Ideally, only one line for each basic structure is displayed:
str(BCData)
The results are shown here:
> str(BCData)'data.frame': 699 obs. of 11 variables: $ Id : int 1000025 1002945 1015425 1016277 1017023 1017122 1018099 1018561 1033078 1033078 ... $ ClumpThickness : int 5 5 3 6 4 8 1 2 2 4 ... $ CellSize : int 1 4 1 8 1 10 1 1 1 2 ... $ CellShape : int 1 4 1 8 1 10 1 2 1 1 ... $ MarginalAdhesion: int ...
