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Table 1 Pearson correlation coefficient and number of samples (N) between different indicators
From: Transport indicator analysis and comparison of 151 urban areas, based on open source data
Pearson Correlation Coefficient | Metropolises | Mature Cities | Small Cities | All Cities |
|---|---|---|---|---|
Spatial city area (Km^2) and annual population growth | 0,534 (N = 44) | 0,513 (N = 55) | – | 0,449 (N = 150) |
Population density and ADETT | 0,520 (N = 37) | 0,545 (N = 55) | – | 0,502 (N = 143) |
Population density and GDP per capita | − 0,530 (N = 42) | − 0,283 (N = 56) | – | − 0,404 (N = 139) |
GDP per capita and ADETT | − 0,512 (N = 36) | − 0,304 (N = 55) | – | − 0,332 (N = 132) |
GDP per capita and road IA | 0,714 (N = 42) | 0,571 (N = 56) | – | 0,559 (N = 139) |
GDP per capita and rail IA | 0,581 (N = 38) | 0,475 (N = 47) | – | 0,355 (N = 124) |
GDP per capita and cycle IA | 0,477 (N = 30) | 0,343 (N = 43) | – | – |
ADETT and road IA | −0,608 (N = 37) | −0,750 (N = 55) | − 0,587 (N = 51) | −0,664 (N = 143) |
ADETT and train IA | −0,626 (N = 34) | −0,338 (N = 46) | – | − 0,387 (N = 127) |
ADETT and cycle IA | −0,358 (N = 27) | -0,303 (N = 43) | -0,427 (N = 42) | -0,337 (N = 112) |