Paremeter

Estimate

Std Deviation

Stat t

p value

1

Constant term

−0.0219

0.0098

−2.2385

0.0289

2

Aluminum Price_t−1

−0.4501

0.1995

−2.2557

0.0277

3

Aluminum Price_t−1

0.2871

0.1799

1,5960

0.1157

4

Aluminum Price_t−1

0.2393

0.1262

1.8955

0.0628

5

Aluminum Price_t−1

−0.2823

0.1454

−1.9418

0.0569

6

Stocks_t−2

0.1453

0.0853

1.7028

0.0938

7

Industrial Production_t−4

4.6688

1.9709

2.3689

0.0211

8

Industrial Production_t−5

4.3138

1.5117

2.8536

0.0059

9

Copper Price_t−1

0.5160

0.1715

3.0085

0.0038

10

Copper Price_t−3

−0.2254

0.1321

−1.7065

0.0931

11

Copper Price_t−6

−0.5302

0.1869

−2.8372

0.0062