Split data set into 80:20 train and test data with the name BostonTraining and BostonTest respectively Your answer here 

In the Boston data set, medv is the target.

Please construct a simple linear regression of medv by rm using BostonTraining Your answer here

Use this model to predict medv in BostonTest and calculate MAE and MSE. Your answer here

Multiple Linear Regression

Please construct a multiple linear regression of medv by all features in BostonTraining Your answer here

Use this model to predict medv in BostonTest and calculate MAE and MSE Your answer here

Subset Selection Linear Regression Model

Forward Stepwise

Please construct a forward stepwise regression with BostonTraining.

Your answer here

Use this model to predict medv in BostonTesting and calculate MAE and MSE. Your answer here

Backward Stepwise

Please construct a backward stepwise regression with BostonTraining. Your answer here

Use this model to predict medv in BostonTesting and calculate MAE and MSE. Your answer here

Model Assessment

Compare all the linear regression models. You can use plots, assessment measures (R2, RSS, MAE, MSE,etc.) Which one is better? Explain your answer.

Boston dataset : https://r-data.pmagunia.com/system/files/datasets/dataset-70319.csv

Load the Boston data set

# import packages library(MASS) library(MLmetrics)

#load data data(Boston)

Check the number of observations and features using dim Your answer here

checking correlation between numerical variables and indicate highly correlated variables (features) Your answer here