document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1102088>Question 1102088</A>: <I><SPAN STYLE=\"word-break: break-all;\"> student receives test scores of 52, 83, and 91. The student final exam is 88 and homework score is 76. Each test is worth 20% the final exam is worth 25%, and the homework grade is worth 15%. What is the students mean score in the class?\r<BR>\n" );
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document.write( "Mean:<BR>\n" );
document.write( "Standard deviation: <BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #716832 by </B><A HREF=/tutors/aboutme.mpl?userid=Theo><B>Theo(13342)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Theo><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=Theo><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=716832\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> the procedure is shown in the following excel spreadsheet printout.\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" src = \"http://theo.x10hosting.com/2017/112101.jpg\" alt=\"$$$\">\r<BR>\n" );
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document.write( "in this particular case, the sum of frequency data is 1 because we are dealing with frequency data being a percent of the total.\r<BR>\n" );
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document.write( "the procedure still requires you to divide by the sum of the frequency data because you will not always be dealing with frequency as a percent of the total.\r<BR>\n" );
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document.write( "in that case, the sum of the frequency data will be something other than 1.\r<BR>\n" );
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document.write( "the following excel printout shows you the same data with frequency as a percent rather than as a decimal equivalent of percent.\r<BR>\n" );
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document.write( "the sum of frequency data is now 100 rather than 1.\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" src = \"http://theo.x10hosting.com/2017/112104.jpg\" alt=\"$$$\">\r<BR>\n" );
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document.write( "the following excel printout shows you the same data with frequency as 5 times the frequency as a percent rather than the frequency as a percent.\r<BR>\n" );
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document.write( "the sum of frequency data is now 500 rather than 100\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" src = \"http://theo.x10hosting.com/2017/112105.jpg\" alt=\"$$$\">\r<BR>\n" );
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document.write( "in all cases, the weighted average and the weighted variance and the weighted standard deviation are all the same.\r<BR>\n" );
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