document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1206259>Question 1206259</A>: <I><SPAN STYLE=\"word-break: break-all;\"> https://ibb.co/d40WLHJ\r<BR>\n" );
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document.write( "Find the best fitting Quadratic model for the data<BR>\n" );
document.write( "a) -26x^2+22,59×+23.02<BR>\n" );
document.write( "b) -26x^2 17.3x+222.8<BR>\n" );
document.write( "c) 2.6x^2+22.9x+20.03<BR>\n" );
document.write( "d) 2.6x^2+2.3x+23.02 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #843563 by </B><A HREF=/tutors/aboutme.mpl?userid=math_tutor2020><B>math_tutor2020(3835)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=math_tutor2020><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=843563\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <font color=black size=3><BR>\n" );
document.write( "Answer: <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=f%28x%29+=+-0.26x%5E2+%2B+22.59x+%2B+23.03 ALIGN=MIDDLE  ALT=\"f%28x%29+=+-0.26x%5E2+%2B+22.59x+%2B+23.03\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "Explanation\r<BR>\n" );
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document.write( "I used GeoGebra to find the answer. I entered the data into the spreadsheet portion, then created a list of points based off it. Lastly I applied the <font color=red>fitPoly</font> function to that list to determine the regression model.<BR>\n" );
document.write( "<a  rel=nofollow HREF=\"https://wiki.geogebra.org/en/FitPoly_Command\">https://wiki.geogebra.org/en/FitPoly_Command</a>\r<BR>\n" );
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document.write( "It is possible to find the quadratic regression equation by hand, but it would be very tedious and take a while. It's recommended to use a specialized calculator instead.\r<BR>\n" );
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document.write( "Here is an article talking about it with the TI84 or similar style of calculators.<BR>\n" );
document.write( "<a  rel=nofollow HREF=\"https://education.ti.com/en/customer-support/knowledge-base/ti-83-84-plus-family/product-usage/11931\">https://education.ti.com/en/customer-support/knowledge-base/ti-83-84-plus-family/product-usage/11931</a>\r<BR>\n" );
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document.write( "Or here's an alternative calculator<BR>\n" );
document.write( "<a  rel=nofollow HREF=\"https://www.statology.org/quadratic-regression-calculator/\">https://www.statology.org/quadratic-regression-calculator/</a>\r<BR>\n" );
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document.write( " <BR>\n" );
document.write( "Another alternative (of many others) is to use a spreadsheet.<BR>\n" );
document.write( "Feel free to explore your favorite calculator.<BR>\n" );
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