document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1196086>Question 1196086</A>: <I><SPAN STYLE=\"word-break: break-all;\"> (1 point) Consider the data in the following table.\r<BR>\n" );
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document.write( "Obs.	X	Y<BR>\n" );
document.write( "1	7	27.2<BR>\n" );
document.write( "2	11	46.4<BR>\n" );
document.write( "3	11	46.2<BR>\n" );
document.write( "4	18	82.2<BR>\n" );
document.write( "5	22	102.2<BR>\n" );
document.write( "6	23	106.2<BR>\n" );
document.write( "7	27	127.2<BR>\n" );
document.write( "8	27	126.2<BR>\n" );
document.write( "9	32	151.8<BR>\n" );
document.write( "10	35	166.4\r<BR>\n" );
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document.write( "Suppose that the relation between the variables Y and X is given by the following linear model:<BR>\n" );
document.write( "Yi=α+β  Xi+ ui<BR>\n" );
document.write( "Compute the following.\r<BR>\n" );
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document.write( "Σni=1XiYi= \r<BR>\n" );
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document.write( "Σni=1X2i= \r<BR>\n" );
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document.write( "Σni=1Xi= \r<BR>\n" );
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document.write( "Σni=1Yi= \r<BR>\n" );
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document.write( "(Σni=1Yi)(Σni\r<BR>\n" );
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document.write( "Σni=1xiyi= \r<BR>\n" );
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document.write( "Σni=1x2i= \r<BR>\n" );
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document.write( "α^= \r<BR>\n" );
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document.write( "β^= \r<BR>\n" );
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document.write( "∑ni=1u^i=\r<BR>\n" );
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document.write( "∑ni=1u^2i= \r<BR>\n" );
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document.write( " </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #829432 by </B><A HREF=/tutors/aboutme.mpl?userid=ikleyn><B>ikleyn(52781)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=ikleyn><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=ikleyn><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=829432\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> .\r<BR>\n" );
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document.write( "Could you explain me please why did you decide that the tutors should do these mechanical calculations for you ?\r<BR>\n" );
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document.write( "&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;In opposite, &nbsp;it is &nbsp;ENTIRELY &nbsp;YOUR &nbsp;JOB.\r<BR>\n" );
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document.write( "<H3>Making calculations is the students' honorable duty and a privilege.</H3>\r<BR>\n" );
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document.write( "&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;It is first axiom of every university, every college and every school.\r<BR>\n" );
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