document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=316684>Question 316684</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The following time series data represent the quarterly amounts spent on advertising (in millions of dollars) by a large toy company (read across): \r<BR>\n" );
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document.write( "Quarter 1 Quarter 2 Quarter 3 Quarter 4 <BR>\n" );
document.write( "8.2 8.4 7.2 8.3 <BR>\n" );
document.write( "8.4 9.8 9.6 9.5 <BR>\n" );
document.write( "8.3 9.3 10.9 11.1 <BR>\n" );
document.write( "10.0 10.0 9.3 11.8 <BR>\n" );
document.write( "11.5 11.8 11.4 10.8 <BR>\n" );
document.write( "10.7       \r<BR>\n" );
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document.write( "This series of data begins in Quarter  of  (i.e., time period  corresponds to the first quarter of ). Using regression analysis, a linear trend line of the form  was fit to the data. Using this information, generate a forecast for the total yearly amount of money that will be spent on advertising in .  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #226880 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=226880\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Find the yearly cost by adding quarter by quarter for each of the 5 years.<BR>\n" );
document.write( "(1,32.1)<BR>\n" );
document.write( "(2,37.3)<BR>\n" );
document.write( "(3,39.6)<BR>\n" );
document.write( "(4,41.1)<BR>\n" );
document.write( "(5,45.5)<BR>\n" );
document.write( "Fit this with a linear model,<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+b%27=SSXY%2FSSYY=0.314 ALIGN=MIDDLE  ALT=\"+b%27=SSXY%2FSSYY=0.314\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
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document.write( ".<BR>\n" );
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document.write( "where x-Year, y-Advertising Cost in millions<BR>\n" );
document.write( "You can then use this model to forecast future costs. <BR>\n" );
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