Now we will add some complexity to the Coronavirus models, while also incorporating some data science type elements (merging of multiple datasets). Each of the 50 United States has been classified into one of 4 census regions: Midwest Northeast West OK AR South United States Census Regions. The file censusRegions. csv contains a mapping of State abbreviation and its corresponding census region. Consider the following: census "Northeast", "Northeast", "Northeast", "Northeast", "Northeast" ## $ State "CT", "ME", "MA", "NH", "RI", "VT", "NJ", "NY", "PA", "IL", "IN"county_data %% mutate (Pop_density = pop/Area, Corona_rate = Total_cases/pop*1000) %>% filter (!State %in% c("AK", "HI")) county_data