Table 6.

Cross-correlation exponents considering the sales in units and nominal interest rate (NIR).

Method/time-series	Region I	Region II	Region III
DFA${}_1$/NIR	0.418 ± 0.003	0.27 ± 0.01	0.021 ± 0.004
DFA${}_1$/sales	0.300 ± 0.007	0.154 ± 0.005	0.49 ± 0.02
DFA${}_0$/NIR	0.368 ± 0.005	0.139 ± 0.006	0.21 ± 0.02
DFA${}_0$/sales	0.183 ± 0.009	0.308 ± 0.006	0.484 ± 0.004
DCCA${}_1$	0.303 ± 0.006	0.318 ± 0.003	0.33 ± 0.01
DCCA${}_0$	0.302 ± 0.001	0.304 ± 0.001	0.53 ± 0.01