Regression models | Predictor Variables | Regression Coefficients | Std. Error | t-value | P-value |
Model 1 | Intercept | −0.308 | 0.12 | −2.6 | <0.0001 |
RMSE = 2.26 | CDED | −0.040 | 0.003 | −13.3 | <0.0001 |
SRTM30 | 0.702 | 0.012 | 58.5 | <0.0001 | |
SRTM90 | −0.598 | 0.013 | −46.0 | <0.0001 | |
NBDEM-Fused | 0.930 | 0.006 | 155.0 | <0.0001 | |
Model 2 | Intercept | −0.228 | 0.011 | −20.7 | <0.0001 |
RMSE = 2.27 | SRTM30 | 0.537 | 0.007 | 76.7 | <0.0001 |
SRTM90 | −0.500 | 0.008 | −62.5 | <0.0001 | |
NBDEM-Fused | 0.957 | 0.004 | 239.3 | <0.0001 | |
Model 3 | Intercept | −0.206 | 0.012 | −17.2 | <0.0001 |
RMSE = 2.32 | NBDEM-Fused | 0.994 | 0.001 | 994.0 | <0.0001 |