Table 5.

Cross-correlation exponents considering the sales in units and nominal exchange rate (NER).

Method/time-series	Region I	Region II	Region III
DFA${}_1$/NER	0.674 ± 0.003	0.444 ± 0.004	0.71 ± 0.02
DFA${}_1$/sales	0.300 ± 0.007	0.154 ± 0.005	0.49 ± 0.02
DFA${}_0$/NER	0.59 ± 0.01	0.473 ± 0.005	0.28 ± 0.03
DFA${}_0$/sales	0.183 ± 0.009	0.308 ± 0.006	0.484 ± 0.004
DCCA${}_1$	0.49 ± 0.01	0.358 ± 0.002	0.73 ± 0.03
DCCA${}_0$	0.44 ± 0.01	0.425 ± 0.004	0.36 ± 0.01