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

Table 7

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

Autocorrelation check of residuals
To Lag	Chi-square	DF	Pr > ChiSq	Autocorrelations
6	4.4	2	0.111	0.019	−0.045	0.024	−0.036	0.069	0.074
12	11.07	8	0.1977	−0.03	−0.126	0.008	−0.055	0.042	−0.001
18	14.41	14	0.4197	−0.035	−0.084	0.021	−0.038	0.021	0.006
24	19.99	20	0.4589	0.067	0.081	−0.033	−0.03	0.012	−0.064
30	30.52	26	0.2465	−0.007	−0.041	−0.11	−0.132	−0.009	0.026
36	33.96	32	0.3733	−0.025	0.025	−0.071	0.011	0.054	0.029