Figure 6
From: The canary in the city: indicator groups as predictors of local rent increases
Upgrading the indicator group. (a) Income-age-profile distribution for users in Chicago. We assign an income-age profile to each user based on the census median income and median age of the visited neighborhoods (darker colors indicate a higher frequency). The 10 percent ‘youngest’ of the ‘richest’ users represent the upgraded indicator group (green) while all ‘richest’ users represent the initial indicator group. (b) For each neighborhood bin in Chicago, we compare the number of upgraded indicator visitors (green) and the number of initial indicator visitors (red) in 2012/2013 with the 2012–2015 change of the census median rent. Using visitors with a high-income-low-age profile as indicator group yields a stronger correlation than using all high-income-profile visitors (upgraded: \(r_{s}=0.78\); \(p<10^{-3}\); \(N=15\), initial: \(r_{s}=0.70\); \(p<10^{-3}\); \(N=22\))