Why Use This Data Source In Your Models?
Crude oil prices indicate oil supply and demand. Shocks to the price can indicate overall economic health.
Crude Oil Price: West TX Intermediate, Cushing, OK
U.S. Energy Information Administration
Dollars per Barrel, Not Seasonally Adjusted
The data shows auto correlation and a non-normal distribution. The data should be differenced. While the Order Norm transformation, provides the best normality, the Untransformed variable will also perform well.
Data is unable to be distributed by time or geography. The roll up method used is Weighted Average.
Data shows auto correlation indicating a need for differencing
The ACF indicates 1 order differencing is appropriate.
Following first order differencing, no further differencing is required based on the differenced ACF at lag one of -0.48
The Kwiatkowski-Phillips-Schmidt-Shin (KPSS) test, KPSS Trend = 3.85 p-value = 0.01 indicates that the data is not stationary.
The Shapiro-Wilk test returned W = 0.93 with a p-value =0.00 indicating the data does not follow a normal distribution.
A skewness score of -0.19 indicates the data are fairly symmetrical.
Hartigan's dip test score of 0.05 with a p-value of 0.00 inidcates the data is multimodal
Auto Correlation Function
Auto Correlation Function After Differencing
Partial Auto Correlation Function
Seasonal and Trend Decompostion
U.S. Energy Information Administration, Crude Oil Prices: West Texas Intermediate (WTI) - Cushing, Oklahoma [DCOILWTICO], retrieved from FRED, Federal Reserve Bank of St. Louis; https://fred.stlouisfed.org/series/DCOILWTICO, November 12, 2019.
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