Research Article
Effect of Ap-Index of Geomagnetic Activity on S&P 500 Stock Market Return
Table 5
Granger Causality Test Results.
| | Null Hypothesis | Lag | p-value | Conclusion |
| | DGD does not Granger cause of SMI | 1 | 0.0505 | Causality significant at 10% level | | SMI does not Granger cause of DGD | 1 | 0.2012 | No Causality | | DGD does not Granger cause of SMI | 2 | 0.0233 | Causality significant at 5% level | | SMI does not Granger cause of DGD | 2 | 0.5333 | No Causality |
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