Fig. 2: Correlation analyses of total final energy demand per capita (TFC) and per-capita CO2 emissions (CO2) with conventional factors and material stock pattern indicators.
From: Built structures influence patterns of energy demand and CO2 emissions across countries
a Pearson’s zero correlation coefficients of correlations between TFC (left) and CO2 (right) and material stock pattern indicators as well as conventional factors. Natural logarithms of the variables were analyzed. Squaring the correlation coefficients gives the percentage of the cross-country variation of CO2 or TFC explained by the respective indicator alone. Correlations were not significant for variables marked with an asterisk (p < 0.1). b Semi-partial correlations between material stock pattern indicators and TFC (left) and CO2 (right) controlling for GDP and DENS. Distance from the vertical axis indicates the correlation coefficient of the semi-partial correlation, and distance from the horizontal axis is the correlation coefficient of the bivariate (uncontrolled) correlation. Red contours indicate insignificant results (significance level p < 0.1).
