Integrated Feature Selection of ARIMA with Computational Intelligence Approaches for Food Crop Price Prediction

Table 12

Ljung-Box test results for ARIMA modeling of corn prices.

Autocorrelation check of residuals
To Lag	Chi-square	DF	Pr > ChiSq	Autocorrelations
6	.	0	.	−0.011	0.082	0.026	0.002	−0.063	−0.027
12	6.71	6	0.3481	0.013	−0.032	0.001	0.012	0.091	−0.014
18	14.3	12	0.2822	−0.069	−0.036	0.042	0.113	0.038	−0.046
24	16.43	18	0.5624	0.014	−0.033	−0.015	0.061	−0.034	−0.015
30	29.11	24	0.2159	0.035	−0.073	0.103	−0.079	−0.025	−0.12
36	30.86	30	0.4225	−0.036	0	0.06	0.005	0.015	−0.001