Problem
• Use the output of the pipe to plot a histogram with education level and average yearly income, and use a facet wrap on urban and rural. What patterns do you see in the data? Make sure to include your graph in your answer write-up.
• Create the sum of all values of perwt - What value do you find? Is this reasonable given the sample selection and the size of the Indian population?
• Recreate question 1 by group by occupational levels. What are the professions with the highest average yearly income in urban areas? And in rural areas?