Research Article
Do Scarce Precious Metals Equate to Safe Harbor Investments? The Case of Platinum and Palladium
Table 4
Summary statistics of ARFIMA-GARCH and ARFIMA-APARCH models.
| Precious metals | ARFIMA-GARCH | ARFIMA-APARCH | -ARFIMA | ARCH | AIC | Log-likelihood | -ARFIMA | ARCH | Gamma | AIC | Log-likelihood |
| Platinum | −0.050 (0.041) | (1,1) | 1.507 | −4163.988 | −0.046 (0.044) | (1,1) | −0.114 (0.028) | 1.502 | −4147.927 | Palladium | −0.028 (0.090) | (1,1) | 2.330 | −6434.194 | −0.027 (0.323) | (2,2) | −0.050 (0.236) | 2.337 | −6425.245 |
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Note: , , and are significant at 10, 5, and 1% levels, respectively; values are in parentheses.
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