Determine does there appear to be any trend in the data

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The US EPA has published the following data for the release to the Florida environment of sulfuric acid (H2SO4 ), the most widely used industrial chemical (in millions of pounds).

Year:       1992    1993    1994    1995    1996    1997    1998    1999    2000

            H2SO4 :   2.475   2.293   1.966   1.729   1.636   1.785   2.284   1.692  1.588

Does there appear to be any trend (consistent increase or decrease with time) in the data? Plot the data on probability-scale graph paper. Is the data "normally" distributed?

Reference no: EM13307899

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