From: Co-movement of commodity price indexes and energy price index: a wavelet coherence approach
MZa | MZa c.v | MSB | MSB c.v | MZt | MZt c.v | t(taubar) | c.v | |
---|---|---|---|---|---|---|---|---|
Panel A: Unit-root tests in levels | ||||||||
EPI | − 12.790 | − 23.366 | 0.192 | 0.145 | − 2.453 | − 3.399 | − 2.408 | − 3.505 |
API | − 10.458 | − 19.552 | 0.215 | 0.159 | − 2.246 | − 3.106 | − 2.236 | − 3.182 |
IPI | − 7.812 | − 22.709 | 0.249 | 0.146 | − 1.948 | − 3.364 | − 1.922 | − 3.466 |
MPI | − 5.522 | − 21.920 | 0.300 | 0.150 | − 1.658 | − 3.289 | − 1.642 | − 3.384 |
Panel B: Unit-root test in first differences | ||||||||
EPI | − 123.572 | − 25.857 | 0.064 | 0.136 | − 7.859 | − 3.508 | − 9.153 | − 3.352 |
API | − 129.303 | − 24.170 | 0.062 | 0.142 | − 8.035 | − 3.443 | − 9.592 | − 2.936 |
IPI | − 41.975 | − 26.526 | 0.109 | 0.134 | − 3.577 | − 3.615 | − 4.257 | − 3.492 |
MPI | − 22.224 | − 24.787 | 0.150 | 0.141 | − 3.324 | − 3.513 | − 3.434 | − 3.293 |