document.write( "Question 1162914: Find the equation of the regression line for the given data. Then construct a scatter plot of the data and draw the regression line. The table shows the shoe size and heights​ (in.) for 6 men.
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\n" ); document.write( "Shoe Size, X: 7.5, 8.5, 9.0, 11.0, 11.5, 12.0\r
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Algebra.Com's Answer #786920 by Edwin McCravy(20060)\"\" \"About 
You can put this solution on YOUR website!
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document.write( "Use your TI-84\r\n" );
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document.write( "Press stat 1 \r\n" );
document.write( "Put the X values in L1 and the Y values in L2\r\n" );
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document.write( "Press stat \r\n" );
document.write( "Press the right arrow to highlight CALC\r\n" );
document.write( "Press 4\r\n" );
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document.write( "      LinReg(ax+b) \r\n" );
document.write( "Xlist:L1\r\n" );
document.write( "Ylist:L2\r\n" );
document.write( "FreqList:\r\n" );
document.write( "Store RegEQ:Y1 <--to get Y1 here Press vars rt. arrow to hilite Y-vars 1 1\r\n" );
document.write( "Calculate      <--down arrow to hilite Calculate \r\n" );
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document.write( "Press enter\r\n" );
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document.write( "        LinReg  \r\n" );
document.write( "y=ax+b\r\n" );
document.write( "a=         <--there will be a number here, that's \"a\"\r\n" );
document.write( "b=         <--there will be a number here too, that's \"b\" \r\n" );
document.write( "r²=        <--there will be a number here\r\n" );
document.write( "r=         <--there will be a number here, that's the reg. coeff.\r\n" );
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document.write( "Substitute a and b in y=ax+b, that is the regression equation.\r\n" );
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document.write( "Press 2nd then y= (upper left corner key of calculator)\r\n" );
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document.write( "Plt1 Plot2 Plot3\r\n" );
document.write( "On Off            <--highlight \"On\"\r\n" );
document.write( "Type:             <--highlight 1st icon (looks like scatterplot)\r\n" );
document.write( "Xlist:L1\r\n" );
document.write( "Ylist:L2\r\n" );
document.write( "Mark:             <--highlight whichever icon you want on scatterplot\r\n" );
document.write( "Color:            <--pick a color if your calculator is a newer model and\r\n" );
document.write( "                     has this\r\n" );
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document.write( "Press zoom       \r\n" );
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document.write( "Use down arrow key to scroll to ZoomStat\r\n" );
document.write( "Press enter\r\n" );
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document.write( "You will see both the regression line and the scatter plot.\r\n" );
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document.write( "To find the values on the scatter plot press 2nd trace 1\r\n" );
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document.write( "type in each value of X and see the scatter plot point highlighted.\r\n" );
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document.write( "To find values on the regression line press zoom and scroll to zoomfit\r\n" );
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document.write( "press enter\r\n" );
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document.write( "press 2nd trace 1\r\n" );
document.write( "type in value see value of Y on the regression line.\r\n" );
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document.write( "To draw this on your paper to turn in, get points on the\r\n" );
document.write( "regression line and plot them on your graph paper.\r\n" );
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document.write( "If you have trouble tell me in the space below and I'll get\r\n" );
document.write( "back to you by email. No charge ever.\r\n" );
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document.write( "Edwin
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