R Code

Question 1

Remove an observation based on a criteria

Answer 1

data[data$variable != criteria, ]

Question 2

Create a Correlation matrix

Answer 2

df %>% select_if(is.numeric) %>% cor()

Question 3

Split data into testing/training set

Answer 3

train_ind

Question 4

To create a cp table

Answer 4

model_name$cptable

Question 5

Print coefficients after regularization

Answer 5

model_name$beta