gaussian distribution-Synonym(s): gaussian curve. graphical distribution of normal data, following a bell-shaped curve; the mean, median and mode all coincide at the central high point of the curve; 67% of data lie within Â± 1 standard deviation (sd) of the spread of the sample data; 95% lie within Â± 2 sds.
The Los Angeles plant is one of Exxon's four refineries in the United States that do not have an adjacent chemical plant. A second, in Chalmette, Louisiana, which Exxon operates jointly with Petroleos de Venezuela, is currently on the block. The other two refineries that are not integrated are located in Joliet, Illinois, and Billings, Montana, and process North American crude oil. As a matter of practice, we do not comment on market speculation or rumor, said Todd Spitler, a spokesman for Exxon Mobil.
Photo Journal. To begin this investigation, you'll conduct a simple visual exploration of images from the scene of an oil spill. All the photographs are from the Exxon Valdez oil spill. ! Click each photo for a larger view. Consider how each photograph shows damage caused by the spill or efforts to clean it up.