Seasonality Tests - Oil Prices
Friedman Rank Test
QS Test
Kruskall Wallis Test
F-Test on Seasonal Dummies
Test-Stat p-Value Test-Stat p-Value Test-Stat p-Value Test-Stat p-Value
Brent 10.86737 0.4544403 0 1 11.320375 0.4168267 0.9710788 0.4725369
US Refiner Acquisition Cost 17.40318 0.0965024 0 1 20.908219 0.0343345 1.5493573 0.1124855
WTI 10.29443 0.5041137 0 1 9.974207 0.5327087 0.9530896 0.4894267