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Graph# 29
PDF Normal & Skew
Data from: EIA
calculated from quantile function Q(p) =   ln(p) - (1-  ) ln(1-p)
1900 = year zero (0)  
 

The EIA data set for production (P140) is not a perfect fit to its price data set. As shown in the study this results from skewness in the logistic function. The skewed logistic function has no explicit mathematical function to describe it, so points must be derived numerically. That is why points are shown on the graph. The "peak" in conventional crude production moves from 2001 to 2006.