document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1081977>Question 1081977</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The average gasoline price per gallon (in cities) and the cost of a barrel of oil are shown below for a random selection of weeks from 2009-2010.\r<BR>\n" );
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document.write( "Oil       73.54.   61.28.   72.94.   53.29    60.50     42.67<BR>\n" );
document.write( "Gasoline   2.818    2.262    2.864    2.352     2.691     2.258\r<BR>\n" );
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document.write( "The correlation coefficient for the data is r = 0.832 and a = 0.05. Find the equation of the regression line. Round the coefficient to 3 decimal places. <BR>\n" );
document.write( "  y’ = a + bx<BR>\n" );
document.write( "           A= ?<BR>\n" );
document.write( "           B= ?<BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #696070 by </B><A HREF=/tutors/aboutme.mpl?userid=Boreal><B>Boreal(15235)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Boreal><IMG SRC=http://www.algebra.com/images/aboutme-small.gif BORDER=0 alt=\"About Me\" VALIGN=MIDDLE></A>&nbsp;<IMG SRC=http://www.algebra.com/cgi-bin/show-face.mpl?user=Boreal><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=696070\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Using cost of gas as the dependent variable and the price of oil as the independent variable<BR>\n" );
document.write( "Y=0.020x+1.333<BR>\n" );
document.write( "A=0.020<BR>\n" );
document.write( "B=1.333<BR>\n" );
document.write( "r^2 is 0.69, the square of r.<BR>\n" );
document.write( "This can be done by hand, but entering data into L1 and L2 then doing linear regression on STAT CALC 4 ENTER is the result with these data. </SPAN>\n" );
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