Hospital daily outpatient visits forecasting using a combinatorial model based on ARIMA and SES models

Table 9 Residuals comparison between three models during 8 weeks

Time series data	Residuals comparison	ARIMA	SES	Combinatorial
EOV	Mean of residual	0.6625	0.4801	0.0504
EOV	Standard deviation of residual	26.9557	30.1864	26.6696
ROV	Mean of residual	−1.5736	0.4905	−0.8760
ROV	Standard deviation of residual	24.7444	24.5082	22.5943

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