Table 5.

Results of Preferred Model with OLS estimator in each of the Nine Curve Estimation models: COVID-19 Death Cases.

Models	Form	Adj. R2	DW-test		SW- test
			Value	P-value	Value	P-value
Linear	Quartic	0.9953	1.3563	0.0021***	0.9581	0.153984
Logarithm	Simple+	0.4988	0.0703	3.63e-011***	0.8552	0.0001***
Inverse	Quartic	0.6856	0.2494	1.798e-015***	0.9449	0.0553*
Power	Simple+	0.842	0.2441	1.798e-015***	0.945971	0.0602*
Compound	Quartic	0.9896	1.6627	0.0345106**	0.97267	0.4513
S-Curve	Quartic	0.9518	0.6449	7.704e-008***	0.9751	0.5301
Growth	Quartic	0.9896	1.6627	0.0345106**	0.97267	0.4513
Exponential	Quartic	0.9896	1.6627	0.0345106**	0.97267	0.4513
Logistic(u=60)	Quartic	0.9824	1.2658	0.00074***	0.941344	0.0422**

NOTE: (i) Bold implies most preferred of the nine models.

(ii) + implies exact multicollinearity made other forms of the variable to be omitted.

(iii) The cumulative death cases recorded within the period was 58.