Table 9.

Nigeria supply response regression with T-GARCH conditional variance.

Variable	Coefficient	Standard error	t-statistic	Prob
C	−53.78072	105.1052	−0.511685	0.6116
Garch	34.95460***	11.99454	2.914209	0.0058
N_exchange_rate	0.040888***	0.016614	2.461104	0.0181
N-pesticide(-1)	0.261831***	0.031352	8.351230	0.0000
N_rainfall	17.12975	29.84627	0.573933	0.5691
N_rainfall^2	−1.204837	2.118552	−0.568708	0.5727
N_Producer_price(-1)	0.394856***	0.115562	3.416849	0.0014

***, ** & * represents significance at the 1 %, 5 % and 10 % level of probability respectively.

Source: Author's computation, 2023