document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=155341>Question 155341</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Find the value for the correlation coefficient r.<BR>\n" );
document.write( "x = 5 , 1<BR>\n" );
document.write( "y=  5 , 10 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #114407 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=114407\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Find the value for the correlation coefficient r.<BR>\n" );
document.write( "x = 5 , x= 1<BR>\n" );
document.write( "y= 5 , y = 10<BR>\n" );
document.write( "-----------------<BR>\n" );
document.write( "There are at least two formulas for \"r\".<BR>\n" );
document.write( "One of them is <BR>\n" );
document.write( "r = [Summation(x-xbar)(y-ybar)]/(n-1)sxsy<BR>\n" );
document.write( "---------<BR>\n" );
document.write( "n=2<BR>\n" );
document.write( "xbar = 3 ; ybar = 7.5<BR>\n" );
document.write( "sx = 2.83 ; sy = 3.54<BR>\n" );
document.write( "-----------------<BR>\n" );
document.write( "r = [(5-3)(5-7.5) + (1-3)(10-7.5)]/ (2-1)*2.83*3.54\r<BR>\n" );
document.write( "\n" );
document.write( "= [2*-2.5 + -2*2.5]/10 = -1\r<BR>\n" );
document.write( "\n" );
document.write( "--------------------------------<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H.\r<BR>\n" );
document.write( "\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );