document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=211177>Question 211177</A>This question is from textbook <A HREF=http://www.amazon.com/exec/obidos/ASIN/9780072966930/algebrahomeworkh></A><BR>\n" );
document.write( ": <I><SPAN STYLE=\"word-break: break-all;\"> It is the last week of class and I think I am finally totally brain dead. I have stared blankly at this problem for over an hour, feably making an attempt to solve it to no avail despite the fact that I have solved two others. Please help me with this problem. I can't seem to find anything about it on your website (not, dashes are column data dividers, not negatives or subtraction). Thank you!!!!!\r<BR>\n" );
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document.write( "(a) Plot the data on U.S. general aviation shipments.<BR>\n" );
document.write( "(b) Describe the pattern and discuss possible causes. <BR>\n" );
document.write( "(c) Would a fitted trend be helpful? Explain. <BR>\n" );
document.write( "(d) Make a similar graph for 1992–2003 only. Would a fitted trend be helpful in making a prediction for 2004? (e) Fit a trend model of your choice to the 1992–2003 data. <BR>\n" );
document.write( "(f) Make a forecast for 2004, using either the fitted trend model or a judgment forecast. Why is it best to ignore earlier years in this data set?							\r<BR>\n" );
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document.write( "U.S. Manufactured General Aviation Shipments, 1966–2003							<BR>\n" );
document.write( "Year	-Planes	-Year	-Planes	-Year	-Planes	-Year	-Planes<BR>\n" );
document.write( "1966	-15,587	-1976	-5,451	-1986	-1,495	-1996	-1,053<BR>\n" );
document.write( "1967	-13,484	-1977	-16,904	-1987	-1,085	-1997	-1,482<BR>\n" );
document.write( "1968	-13,556	-1978	-17,811	-1988	-1,143	-1998	-2,115<BR>\n" );
document.write( "1969	-12,407	-1979	-17,048	-1989	-1,535	-1999	-2,421<BR>\n" );
document.write( "1970	-7,277	-1980	-11,877	-1990	-1,134	-2000	-2,714<BR>\n" );
document.write( "1971	-7,346	-1981	-9,457	-1991	-1,021	-2001	-2,538<BR>\n" );
document.write( "1972	-9,774	-1982	-4,266	-1992	-856	-2002	-2,169<BR>\n" );
document.write( "1973	-13,646	-1983	-2,691	-1993	-870	-2003	-2,090<BR>\n" );
document.write( "1974	-14,166	-1984	-2,431	-1994	-881		<BR>\n" );
document.write( "1975	-14,056	-1985	-2,029	-1995	-1,028<BR>\n" );
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 #159539 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=159539\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Construct a dot-plot so you can see the downs and the <BR>\n" );
document.write( "ups in number of planes ordered.<BR>\n" );
document.write( "Let 1966 be represented by zero and 2003 be represented<BR>\n" );
document.write( "by 37.<BR>\n" );
document.write( "Find a regression line or curve and describe it.<BR>\n" );
document.write( "Construct another dot plot for 1992-2003.<BR>\n" );
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document.write( "Use some means or modes or whatever other statistics <BR>\n" );
document.write( "you can to analyze the data.<BR>\n" );
document.write( "=================================<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H.  </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );