Frequesncy of Passengers vs Regions

D3 Implementation:

Tableau:

Shows the median parent household income (adjusted for inflation) versus mobility rate, calculated as the percent of students with parents in the bottom 20% of income distribution that reach the top 20% in income distribution. Circles are sized by average number of students per cohort, and colored by the change in the percent of parents from the bottom 40% of income distribution from 1980 to 1991. Source: https://opportunityinsights.org/data/