Table 6.

Results of the most preferred model with the estimators: COVID-19 Death Cases.

Estimator		Estimation Methods
		OLS	CORC	HILU	PW	LAD
${\widehat{\beta }}_0$	Estimate	1.1464	1.9173	1.9189	1.3449	1.0711
	Std. Error	1.0108	2.447	2.4494	1.2579	0.8036
	T-value	1.134	0.7835	0.7834	1.069	1.333
	P-value	0.2647	0.4389	0.439	0.2925	0.1915
${\widehat{\beta }}_1$	Estimate	-0.117	-0.3897	-0.3902	-0.2352	-0.0958
	Std. Error	0.3407	0.7087	0.7093	0.43189	0.3297
	T-value	-0.3434	-0.5499	-0.5502	-0.5446	-0.2907
	P-value	0.7334	0.5861	0.5859	0.5896	0.7731
${\widehat{\beta }}_2$	Estimate	0.0308	0.0591	0.0592	0.0462	0.0252
	Std. Error	0.034	0.0639	0.0639	0.0437	0.0384
	T-value	0.9052	0.9258	0.926	1.058	0.6576
	P-value	0.3717	0.3613	0.3612	0.2973	0.5152
${\widehat{\beta }}_3$	Estimate	-0.0009	-0.002	-0.002	-0.0015	-0.0005
	Std. Error	0.0013	0.0022	0.0022	0.0016	0.0016
	T-value	-0.6694	-0.8767	-0.8770	-0.9354	-0.2741
	P-value	0.5078	0.3870	0.3868	0.3562	0.7857
${\widehat{\beta }}_4$	Estimate	2.7e-05	4.13e-05	4.13e-05	3.66e-05	2.007e-05
	Std. Error	1.56e-05	2.63e-05	2.63e-05	2.03e-05	2.323e-05
	T-value	1.717	1.569	1.569	1.801	0.8643
	P-value	0.095*	0.1262	0.1262	0.0805*	0.3935
$\widehat{\rho }$			0.347	0.347	0.3389
Adj. R2	0.995342	0.995638	0.9956	0.995737	0.995047
DW	Stat-value	1.3563	1.7146	1.7151	1.7056	1.23802
	P-value	0.0021***
SW	Stat-value	0.9581	0.9576	0.9576	0.9571	0.918514
	P-value	0.15398	0.1585	0.1581	0.1428	0.0078***

Note: (i)*and *** imply significance at alpha = 0.1 and 0.01respectively.