7.507 
6.254 
4 
5.004 é, = —0.20995 
4 d>= 0.30378 
d3= 0.15392 
3.755 b,= 0.80692 
1.0440 
Fig. 5.30b. Estimated by ARMA model fitting as optimum, ARMA(3.1). 
Fig. 5.30. (Continued) 
155 
