# he file data_inequality.xlsx contains data by commuting zone on the rank-rank slope

August 30, 2017

Question
The file data_inequality.xlsx contains data by commuting zone on the rank-rank slope. Remember, the rank-rank slope is the slope of the line where mean child income rank is on the y-axis and the parent income rank is on the x-axis (call this the “rank-rank line”).

(a) 1 point. What is the interpretation of the rank-rank slope?

(b) 1 point. What is the interpretation of the y-intercept of the “rank-rank line”?

(b) 2 points. What is the relationship between the rank-rank slope and intergenerational mobility? Explain your answer.

(c) 3 points. In the excel file, for birth year 1980, find the rank-rank slope in the following commuting zones: Lexington-Fayette, Cincinnati, OH, San Francisco CA, Seattle WA, Charlotte NC, New York NY, Chicago IL, Detroit MI, Louisville KY, Atlanta GA, Austin TX, and Salt Lake City UT. In what region of the country is the place with the highest rank-rank slope located? In what region of the country is the lowest rank-rank slope is located?

(d) 5 points. Graph the rank-rank slope (income age 26) for birth years 1980 to 1986 for every commuting zone listed in part (c) in a separate graph.

(e) 2 point. What relationship do you notice between birth year and the rank-rank slope? What does this tell you about the change in intergenerational mobility?

(f) 5 points. Graph the rank-rank slope (college age 19) for birth years 1984 to 1993 for every commuting zone in (c) separately. Remember, this is the slope of the line where mean child college attendance rank is on the y-axis and the parent income rank is on the x-axis.

(g) 2 points. What relationship do you notice between birth year and the rank-rank slope? What does this tell you about the change in intergenerational mobility?

(h) 2 points. Are your conclusions in (e) and (g) different from the conclusions we made for the whole country in class? Explain how they are different, if yes.

Attachments
data_inequality.xls (1343 KB)

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