document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1072155>Question 1072155</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A survey of height and weight is completed for a group of men. The average height is 71 inches and the SD is 5 inches and the average weight is 189 pounds and the SD is 41 pounds. A scatter diagram is plotted and the correlation coefficient is found to be 0.75. <BR>\n" );
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document.write( "Find the linear regression line. y= \r<BR>\n" );
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document.write( "therefore slope= 0.75*sdy/sdx=<BR>\n" );
document.write( "                 0.75-41/5= 6.15<BR>\n" );
document.write( "                  y=6.15x-b<BR>\n" );
document.write( "                  41=6.15 *5= 10.25<BR>\n" );
document.write( "                   y= 6.15x+1025 but it is incorrect\r<BR>\n" );
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document.write( "What am I doing wrong?\r<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 #687199 by </B><A HREF=/tutors/aboutme.mpl?userid=rosie4161026><B>rosie4161026(1)</B></A><img src=\"/images/stars/iconNewId_16x16.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=rosie4161026><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=rosie4161026><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=687199\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> you are graphing the whole line so it should be:<BR>\n" );
document.write( "The regression line would be: <BR>\n" );
document.write( " y = &#956;_y + (x - &#956;_x ) * r * sd_y / sd_x <BR>\n" );
document.write( " => y = 189 + (x - 71) * 0.75 * 41 /5<BR>\n" );
document.write( " => y = 189 + 6.15x - 436.65<BR>\n" );
document.write( " => y = 6.15x - 247.65   </SPAN>\n" );
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