document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=965515>Question 965515</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Please help me on this math problem. Unfortunately I was not able to include a picture in this submission, so I posted a link to that question below. Just copy and paste the link onto your address bar. Please help me tutors, I'd really appreciate any help! God bless :) \r<BR>\n" );
document.write( "\n" );
document.write( "https://answers.yahoo.com/question/index?qid=20150422153804AACPJzS </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #590171 by </B><A HREF=/tutors/aboutme.mpl?userid=rothauserc><B>rothauserc(4718)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=rothauserc><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=rothauserc><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=590171\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> We are given the following information<BR>\n" );
document.write( "x-axis(People) 2, 1, 5, 6, 4, 1, 2, 5<BR>\n" );
document.write( "y-axis(Bill**) 1, 0.25, 2.5, 3.5, 1.8, 0.45, .75, 3<BR>\n" );
document.write( "***************************************************<BR>\n" );
document.write( "a) the points are graphed with their x, y coordinates, for example<BR>\n" );
document.write( "(2, 1) is the first of 8 points<BR>\n" );
document.write( "***************************************************<BR>\n" );
document.write( "b) This is a linear regression problem without a y intercept (no x value = 0)<BR>\n" );
document.write( "The general form of the equation is y = b*x where <BR>\n" );
document.write( "b = (summation from i = 1 to 8 of xi*yi) / (summation from i = 1 to 8 of xi^2)<BR>\n" );
document.write( "b = (2×1)+(1×0.25)+(5×2.5)+(6×3.5)+(4×1.8)+(1×0.45)+(2×0.75)+(5×3) / 2²+1²+5²+6²+4²+1²+2²+5²<BR>\n" );
document.write( "b = 59.9 / 112 = 0.534821429<BR>\n" );
document.write( "therefore the regression equation is<BR>\n" );
document.write( "y = 0.534821429 * x, where * means multiply<BR>\n" );
document.write( "***************************************************<BR>\n" );
document.write( "the trend line is a good fit if<BR>\n" );
document.write( "1) same number of point above the line as below the line<BR>\n" );
document.write( "2) are they evenly distributed<BR>\n" );
document.write( "***************************************************<BR>\n" );
document.write( "c) our equation is<BR>\n" );
document.write( "y = 0.534821429 * x<BR>\n" );
document.write( "we are asked what is x for 150, then y = 150 / 100 = 1.5<BR>\n" );
document.write( "1.5 = 0.534821429 * x<BR>\n" );
document.write( "x = 1.5 / 0.534821429<BR>\n" );
document.write( "x = 2.804674457 approx 3<BR>\n" );
document.write( "size of household is 3 people <BR>\n" );
document.write( " <BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );