document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1057898>Question 1057898</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Find the correlation coefficient for the following set of data. Then, write the regression equation for this data. Use the regression equation to find:\r<BR>\n" );
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document.write( "2.4	225<BR>\n" );
document.write( "1.6	184<BR>\n" );
document.write( "2	220<BR>\n" );
document.write( "2.6	240<BR>\n" );
document.write( "1.4	180<BR>\n" );
document.write( "1.6	184<BR>\n" );
document.write( "2	186<BR>\n" );
document.write( "2.2	215\r<BR>\n" );
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document.write( "a. Use Excel to determine the correlation coefficient of this data\r<BR>\n" );
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document.write( "b. Use Excel to determine the regression equation of this data\r<BR>\n" );
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document.write( "c. Use the regression equation to find f(3.1)\r<BR>\n" );
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document.write( "d. Use the regression equation to find f(1.7) </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #672893 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=672893\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> \r<BR>\n" );
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document.write( "Type the data into EXCEL<BR>\n" );
document.write( "Highlight the data, choose Insert Scatterplot.<BR>\n" );
document.write( "Then right click on a data point and a Format Trendline dialog box will open.<BR>\n" );
document.write( "Tick the last two boxes as shown.<BR>\n" );
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document.write( "The equation will be placed on the graph in addition to the coefficient of determination. The square root of the coefficient of determination is the correlation coefficient. <BR>\n" );
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document.write( "When you have the equation, find the values of y when <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x=3.1 ALIGN=MIDDLE  ALT=\"x=3.1\"   DISABLED_style= \"max-width:90%; height:auto;\" > and <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x=1.7 ALIGN=MIDDLE  ALT=\"x=1.7\"   DISABLED_style= \"max-width:90%; height:auto;\" >.  </SPAN>\n" );
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