r - create a new empty variable in a dataset

# Create a new empty variable in a dataset
dataset$new_variable <- NA

Explanation: 1. dataset$new_variable: This line of code creates a new column named "new_variable" in the dataset called dataset. 2. <-: This symbol is used to assign values. 3. NA: Stands for "Not Available" or missing value in R. It is used here to initialize the new_variable column with empty (missing) values for all rows in the dataset.