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#### What is the relationship between the price of crude oil and the price you pay at the pump for gasoline? The file oil and gas

###### Statistics

What is the relationship between the price of crude oil and the price you pay at the pump for gasoline? The file oil and gas.xls contains the price (\$) for a barrel of crude oil (Cushing, Oklahoma spot price) and a gallon of gasoline (New York Harbor Conventional spot price) for 104 weeks ending June 25, 2010. (Data extracted from Energy Information Ad- ministration, U.S. Department of Energy, www.eia.doe.gov.)

a. Construct a scatter plot with the price of oil on the horizontal axis and the price of gasoline on the vertical axis.

b. Use the least-squares method to develop a simple linear regression equation to predict the price of a gallon of gasoline using the price of a barrel of crude oil as the independent variable.

c. Interpret the meaning of the slope, b1, in this problem.

d. Plot the residuals versus the time period.

 Date Gasoline Crude Oil Jan 01, 2010 2.031 79.07 Jan 08, 2010 2.124 82.34 Jan 15, 2010 2.079 80.06 Jan 22, 2010 2.010 76.62 Jan 29, 2010 1.942 73.94 Feb 05, 2010 1.885 74.57 Feb 12, 2010 1.908 73.88 Feb 19, 2010 2.031 78.25 Feb 26, 2010 2.042 79.22 Mar 05, 2010 2.127 80.19 Mar 12, 2010 2.154 81.76 Mar 19, 2010 2.150 81.44 Mar 26, 2010 2.118 80.65 Apr 02, 2010 2.191 83.01 Apr 09, 2010 2.238 85.66 Apr 16, 2010 2.205 84.34 Apr 23, 2010 2.195 82.90 Apr 30, 2010 2.260 84.22 May 07, 2010 2.155 80.24 May 14, 2010 2.099 74.98 May 21, 2010 1.921 69.14 May 28, 2010 1.900 70.62 Jun 04, 2010 1.945 72.91 Jun 11, 2010 1.969 73.44 Jun 18, 2010 2.080 76.70 Jun 25, 2010 2.054 77.06 Jul 02, 2010 1.969 74.96 Jul 09, 2010 1.970 74.39 Jul 16, 2010 1.988 76.35 Jul 23, 2010 2.025 77.56 Jul 30, 2010 2.024 78.12 Aug 06, 2010 2.098 81.79 Aug 13, 2010 1.949 78.17 Aug 20, 2010 1.882 74.84 Aug 27, 2010 1.859 72.91 Sep 03, 2010 1.919 74.02 Sep 10, 2010 1.968 74.82 Sep 17, 2010 1.978 75.62 Sep 24, 2010 1.951 73.76 Oct 01, 2010 2.034 78.41 Oct 08, 2010 2.193 82.29 Oct 15, 2010 2.202 82.16 Oct 22, 2010 2.146 81.15 Oct 29, 2010 2.122 82.03 Nov 05, 2010 2.174 84.93 Nov 12, 2010 2.242 86.91 Nov 19, 2010 2.287 82.23 Nov 26, 2010 2.258 82.28 Dec 03, 2010 2.359 86.75 Dec 10, 2010 2.349 88.50 Dec 17, 2010 2.329 88.27 Dec 24, 2010 2.452 89.66 Dec 31, 2010 2.430 90.97 Jan 07, 2011 2.442 89.54 Jan 14, 2011 2.474 91.02 Jan 21, 2011 2.464 89.75 Jan 28, 2011 2.411 86.11 Feb 04, 2011 2.466 89.52 Feb 11, 2011 2.471 85.51 Feb 18, 2011 2.511 84.13 Feb 25, 2011 2.731 95.26 Mar 04, 2011 2.864 101.05 Mar 11, 2011 2.832 103.74 Mar 18, 2011 2.734 99.79 Mar 25, 2011 2.846 104.41 Apr 01, 2011 2.972 105.08 Apr 08, 2011 3.117 109.29 Apr 15, 2011 3.133 107.75 Apr 22, 2011 3.192 109.11 Apr 29, 2011 3.290 112.30 May 06, 2011 3.159 105.84 May 13, 2011 3.152 99.87 May 20, 2011 2.865 97.99 May 27, 2011 2.933 99.55 Jun 03, 2011 2.924 100.92 Jun 10, 2011 2.899 100.05 Jun 17, 2011 2.868 95.87 Jun 24, 2011 2.739 92.70 Jul 01, 2011 2.796 93.70 Jul 08, 2011 2.973 97.12 Jul 15, 2011 3.043 96.72 Jul 22, 2011 3.039 98.01 Jul 29, 2011 3.048 97.83 Aug 05, 2011 2.889 90.85 Aug 12, 2011 2.741 82.86 Aug 19, 2011 2.807 85.36 Aug 26, 2011 2.862 85.06 Sep 02, 2011 2.911 88.07 Sep 09, 2011 2.937 87.91 Sep 16, 2011 2.794 88.93 Sep 23, 2011 2.678 83.65 Sep 30, 2011 2.635 81.18 Oct 07, 2011 2.710 79.43 Oct 14, 2011 2.882 85.35 Oct 21, 2011 2.772 86.82 Oct 28, 2011 2.744 92.32 Nov 04, 2011 2.703 93.24 Nov 11, 2011 2.719 96.97 Nov 18, 2011 2.577 99.32 Nov 25, 2011 2.548 96.89 Dec 02, 2011 2.602 99.91 Dec 09, 2011 2.636 100.08 Dec 16, 2011 2.568 96.06 Dec 23, 2011 2.639 97.74 Dec 30, 2011 2.698 99.81 Jan 06, 2012 2.778 102.39 Jan 13, 2012 2.774 100.43 Jan 20, 2012 2.831 99.95 Jan 27, 2012 2.867 99.35 Feb 03, 2012 2.910 97.80 Feb 10, 2012 2.988 98.56 Feb 17, 2012 3.025 101.73 Feb 24, 2012 3.113 107.18 Mar 02, 2012 3.174 107.52 Mar 09, 2012 3.043 106.32 Mar 16, 2012 3.117 106.15 Mar 23, 2012 3.219 106.41 Mar 30, 2012 3.307 105.12 Apr 06, 2012 3.361 103.52 Apr 13, 2012 3.278 102.55 Apr 20, 2012 3.154 103.15 Apr 27, 2012 3.090 103.78 May 04, 2012 2.986 103.47 May 11, 2012 2.933 96.98 May 18, 2012 2.875 93.11 May 25, 2012 2.827 90.88 Jun 01, 2012 2.714 87.06 Jun 08, 2012 2.683 84.43 Jun 15, 2012 2.672 83.27 Jun 22, 2012 2.535 81.11 Jun 29, 2012 2.515 80.23 Jul 06, 2012 2.664 85.74 Jul 13, 2012 2.769 85.78 Jul 20, 2012 2.820 90.34 Jul 27, 2012 2.711 88.88 Aug 03, 2012 2.837 89.10 Aug 10, 2012 2.987 93.14 Aug 17, 2012 3.002 94.43 Aug 24, 2012 3.041 96.22 Aug 31, 2012 3.146 95.68 Sep 07, 2012 3.244 95.68 Sep 14, 2012 3.335 97.56 Sep 21, 2012 3.134 93.70 Sep 28, 2012 3.363 91.35 Oct 05, 2012 3.234 90.81 Oct 12, 2012 3.163 91.42 Oct 19, 2012 2.897 91.59 Oct 26, 2012 2.717 86.35 Nov 02, 2012 2.730 85.87 Nov 09, 2012 2.810 85.98 Nov 16, 2012 2.921 85.87 Nov 23, 2012 2.818 87.40 Nov 30, 2012 2.789 87.27 Dec 07, 2012 2.681 87.00 Dec 14, 2012 2.645 85.71 Dec 21, 2012 2.755 88.24 Dec 28, 2012 2.827 90.14 Jan 04, 2013 2.814 92.77 Jan 11, 2013 2.809 93.38 Jan 18, 2013 2.770 94.58 Jan 25, 2013 2.880 95.41 Feb 01, 2013 3.032 97.33 Feb 08, 2013 3.057 96.18 Feb 15, 2013 3.088 96.95 Feb 22, 2013 3.092 94.38 Mar 01, 2013 2.992 92.19 Mar 08, 2013 2.913 91.00 Mar 15, 2013 2.909 92.70 Mar 22, 2013 2.875 93.05 Mar 29, 2013 2.911 96.08 Apr 05, 2013 2.758 95.07 Apr 12, 2013 2.677 93.36 Apr 19, 2013 2.691 88.00 Apr 26, 2013 2.691 91.00 May 03, 2013 2.699 93.40 May 10, 2013 2.767 95.84 May 17, 2013 2.777 94.65 May 24, 2013 2.747 94.76 May 31, 2013 2.707 93.32 Jun 07, 2013 2.752 94.25 Jun 14, 2013 2.786 96.36

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### Option 2

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