Table 6.

Slope homogeneity tests.

	Statistic	Value
(71 )
$\tilde{\Delta }$	$\sqrt{N}(\frac{N^{-1}\overline{S}-k}{\sqrt{2k}})~X_k^2$	5.873a
${\tilde{\Delta }}_{\text{a}d\text{j}}$	$\sqrt{N}(\frac{N^{-1}\overline{S}-k}{v(T,k)})~N(0,1)$	7.019a
(72)
Δ HAC	$\sqrt{N}(\frac{N^{-1}{S}_{HAC}-k_2}{\sqrt{2k_2}})$	5.723a
(ΔHAC)adj	$\sqrt{N}(\frac{N^{-1}{\overline{S}}_{HAC}-k_2}{v(T,k)})~N(0,1)$	6.841a

^a represents statistical significance at 1%.

$\tilde{\Delta }$ and ${\tilde{\Delta }}_{\text{a}d\text{j}}$ represent the “simple” and “mean variance bias adjusted” slope homogeneity tests, respectively.

Δ_HAC and (_ΔHAC)adj represent the “Heteroscedasticity and Autocorrelation Consistent” versions of “simple” and “mean variance bias adjusted” slope homogeneity tests, respectively.