document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1070279>Question 1070279</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Can someone please help me figure out what I'm doing wrong?<BR>\n" );
document.write( "I'm trying to find the summation(d-dbar)^2 <BR>\n" );
document.write( "Here is the data:<BR>\n" );
document.write( "x	y<BR>\n" );
document.write( "5	6<BR>\n" );
document.write( "4	5<BR>\n" );
document.write( "8	6<BR>\n" );
document.write( "7	10<BR>\n" );
document.write( "10	6<BR>\n" );
document.write( "6	11<BR>\n" );
document.write( "6	5<BR>\n" );
document.write( "12	8\r<BR>\n" );
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document.write( "I got the sum of the differences as 1<BR>\n" );
document.write( "The mean of the differences (b-bar) as 0.125<BR>\n" );
document.write( "Therefore, wouldn't the summation of (d-dbar)^2 be 0.765625?<BR>\n" );
document.write( "The book shows the answer as 72.875.<BR>\n" );
document.write( "I must be leaving out a step?  I can't figure it out.  Could you please help? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #685443 by </B><A HREF=/tutors/aboutme.mpl?userid=Theo><B>Theo(13342)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Theo><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=Theo><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=685443\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> you are leaving out a step.\r<BR>\n" );
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document.write( "not exactly sure what they are going, but this is what's happening if i understand what you are looking for correctly.\r<BR>\n" );
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document.write( "first of all you need to get the mean.\r<BR>\n" );
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document.write( "you did that correctly and the mean is equal to .125.\r<BR>\n" );
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document.write( "now you have to get the difference between each of the data values and the mean and then square it.\r<BR>\n" );
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document.write( "for example:\r<BR>\n" );
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document.write( "first data value is (5-6) = -1.<BR>\n" );
document.write( "you would subtract the mean from that and get -1 - .125 = -1.125.<BR>\n" );
document.write( "you would then square that to get 1.265625.\r<BR>\n" );
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document.write( "you would do the same for each of the values minuse the mean and then square it.\r<BR>\n" );
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document.write( "you would then sum up the squared deviations from the mean and that sum would be equal to 72.875 as the book says.\r<BR>\n" );
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document.write( "i did the calculations in excel and this is what i got.\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" src = \"http://theo.x10hosting.com/2017/022602.jpg\" alt=\"$$$\" </>\r<BR>\n" );
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