Time-Series Regression Model for Prediction of Mean Daily Global Solar Radiation in Al-Ain, UAE

Table 11

Statistical error data for the mean daily GSR error for regression and regression-ARMA models versus measured test data for years 2005–2007.

Description	Regression versus test data	Regression-ARMA versus test data
RMSE	0.4161	0.3701
MBE	−0.0464	−0.0164
MABE	0.3082	0.2704
MAPE	5.37%	4.71%
𝑅^2	90.77%	92.59%