# Instrumental Variables example library(sem) #If gets error, add code or download a new version R studio wages 
 
 
The code above is also shown in the screenshot below
 
 
 
 
Hello. The purpose of this exercise is to implement and contrast linear regression with instrumental variables, and explore methods for choosing X variables outside of theory.
 
 
 
You can make any code changes you like, adding functions, commands, or other features that help you interact with the data
 
 
 
Please make up to 3 changes in the code and detail which lines in the code have been changed in order to interact with the data. Importing new functions from other librarys are allowed.