document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=321023>Question 321023</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The ages (in years) of seven people and the number of days they spent recovering in the hospital after surgery are given in the following table.\r<BR>\n" );
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document.write( " Age, x 12 21 38 44 59 63 70 <BR>\n" );
document.write( "Days in Hospital, y 4 6 7 5 9 11 12 \r<BR>\n" );
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document.write( " Calculate the correlation coefficient, r.  \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 #229915 by </B><A HREF=/tutors/aboutme.mpl?userid=Fombitz><B>Fombitz(32388)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Fombitz><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=Fombitz><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=229915\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=drawing%28300%2C300%2C-5%2C75%2C-5%2C15%2Cgrid%281%29%2C%0D%0Acircle%28+12%2C4%2C1.3+%29%2C%0D%0Acircle%2821%2C6%2C1.3%29%2C%0D%0Acircle%2838%2C7%2C1.3%29%2C%0D%0Acircle%2844%2C5%2C1.3%29%2C%0D%0Acircle%2859%2C9%2C1.3%29%2C%0D%0Acircle%2863%2C11%2C1.3%29%2C%0D%0Acircle%2870%2C12%2C1.3%29%2C%0D%0Agraph%28300%2C300%2C-5%2C75%2C-5%2C15%2C0%29%29 ALIGN=MIDDLE   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=yave=7.714286 ALIGN=MIDDLE  ALT=\"yave=7.714286\"   DISABLED_style= \"max-width:90%; height:auto;\" > <BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=SSXX=2850.857 ALIGN=MIDDLE  ALT=\"SSXX=2850.857\"   DISABLED_style= \"max-width:90%; height:auto;\" > <BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=SSYY=55.42857 ALIGN=MIDDLE  ALT=\"SSYY=55.42857\"   DISABLED_style= \"max-width:90%; height:auto;\" > <BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=SSXY=355.7143 ALIGN=MIDDLE  ALT=\"SSXY=355.7143\"   DISABLED_style= \"max-width:90%; height:auto;\" > <BR>\n" );
document.write( "b=<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=SSXY%2FSSXX=0.125 ALIGN=MIDDLE  ALT=\"SSXY%2FSSXX=0.125\"   DISABLED_style= \"max-width:90%; height:auto;\" > <BR>\n" );
document.write( "b'=<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=SSXY%2FSSYY=6.42 ALIGN=MIDDLE  ALT=\"SSXY%2FSSYY=6.42\"   DISABLED_style= \"max-width:90%; height:auto;\" > <BR>\n" );
document.write( "b*b'=<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=r%5E2=0.801 ALIGN=MIDDLE  ALT=\"r%5E2=0.801\"   DISABLED_style= \"max-width:90%; height:auto;\" > <BR>\n" );
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