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10 Nov 2019
The gasoline-equivalent gallons E (in thousands) consumed byvehicles that run on 85% ethanol in the United States from 1994 to2002 are shown in the table.
Year Gallons consumed
1994 80
1995 190
1996 694
1997 1280
1998 1727
1999 3916
2000 12,071
2001 14,623
2002 17,783
(a) use a grapyhing utility to create a scatter plot of the data.Let t represent the year, with t=4 corresponding to 1994.
(b) Use the regression feature of a graphing utility to find aquadratic model and a quartic model for E. The graph each modelwith the data.
(d) Use the coefficient of variation to determine with regressionis better.
The gasoline-equivalent gallons E (in thousands) consumed byvehicles that run on 85% ethanol in the United States from 1994 to2002 are shown in the table.
Year Gallons consumed
1994 80
1995 190
1996 694
1997 1280
1998 1727
1999 3916
2000 12,071
2001 14,623
2002 17,783
(a) use a grapyhing utility to create a scatter plot of the data.Let t represent the year, with t=4 corresponding to 1994.
(b) Use the regression feature of a graphing utility to find aquadratic model and a quartic model for E. The graph each modelwith the data.
(d) Use the coefficient of variation to determine with regressionis better.
Reid WolffLv2
16 Apr 2019