Petroleum & Other Liquids

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Gasoline and Diesel Fuel Update

Gasoline Release Date: April 20, 2015   |   Next Release Date: April 27, 2015
        Diesel Fuel Release Date: April 27, 2015   |   Next Release Date: May 4, 2015

Definition of the Coefficient of Variation

The Coefficient of Variation (CV) of the mean, a measurement of variability of the mean price, is calculated as the standard error divided by the mean. As a measure of precision reflecting the error due to sampling, it can also be used to construct a confidence interval for the population mean. For example, a mean price of $1.67 and a CV of 0.004 (.4%) indicates at the 95% confidence level that the population mean price has an upper limit of $1.68 ($1.67 + 1.96*0.004*$1.67) and a lower limit of $1.66 ($1.67 - 1.96*0.004*$1.67).

Detailed Price and CV Report

Motor Gasoline Prices & Coefficients of Variation Spreadsheet