Table 7.

MAE values of regression models fitted on data generated with NB regression model

Sample Size	Dispersion	Poisson	NB	ZIP	ZINB
50	0.01	0.6457	0.6501	0.6501	0.6477
	1	2.0766	2.0981	2.0808	2.1070
	5	4.3471	4.7621	4.4190	4.7984
	10	6.0011	7.4481	6.2916	7.5888
200	0.01	0.3263	0.3297	0.3263	0.3267
	1	1.0397	1.0384	1.0412	1.0402
	5	2.2255	2.2529	2.2250	2.2651
	10	3.2408	3.0910	3.1349	3.3494
600	0.01	0.1836	0.1828	0.1836	0.1839
	1	0.6050	0.6020	0.6057	0.6024
	5	1.2813	1.2810	1.2853	1.2935
	10	1.8427	1.8309	1.8340	1.8844
1000	0.01	0.1430	0.1427	0.1430	0.1429
	1	0.4701	0.4677	0.4696	0.4683
	5	0.9983	0.9959	0.9972	1.0025
	10	1.4665	1.4614	1.4629	1.4951