Compound Grey-Logistic Model and Its Application

Table 3

Statistics of model parameter estimation for case 1.

Model	Variable	Coefficients	Std. error	t stat	-value
Grey	b	0.059	0.003	21.436	<0.001
	a	−0.003	0.002	−1.569	0.126
Logistic	γ1	0.736	0.184	4.009	<0.001
	γ2	−11.586	2.810	−4.122	<0.001
Grey-logistic	γ1	0.016	0.007	2.386	0.023
	γ2	−0.205	0.109	−1.884	0.068