Programming Homework Help

I’m working on a r case study and need support to help me understand better.

You are given nine years of individual EPA data in csv format. The data files are not very large (each file is approx. 1 MB). Each yearly file contains thousands of vehicles along with their vital information and pollution testing records. Each file contains 42 columns, the details of which are given in the Data Dictionary document. Please note that the original data had more columns, and some of them were removed for the consistency purposes. The deleted columns also exist in the data dictionary and you are asked to ignore them while referring to the dictionary.