document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1202552>Question 1202552</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The department store manager has prepared data on the sales volume of product A for 28 days (sample):<BR>\n" );
document.write( "3;1;2;0;2;0;1;3;1;2;5;0;1;2;<BR>\n" );
document.write( "0;0;1;1;0;1;2;3;5;2;1;0;3;0.<BR>\n" );
document.write( "*Calculate the sample mean and variance. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #837476 by </B><A HREF=/tutors/aboutme.mpl?userid=math_tutor2020><B>math_tutor2020(3817)</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=837476\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <font color=black size=3><BR>\n" );
document.write( "The tutor @mananth has the right idea. \r<BR>\n" );
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document.write( "However, we won't divide by n = 28, because this computes the population variance.\r<BR>\n" );
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document.write( "Instead we divide by n-1 = 28-1 = 27 to determine the sample variance.\r<BR>\n" );
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document.write( "The sample variance is 55/27 = 2.037 approximately.\r<BR>\n" );
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document.write( "Helpful calculator:<BR>\n" );
document.write( "<a  rel=nofollow HREF=\"https://www.calculatorsoup.com/calculators/statistics/variance-calculator.php\">https://www.calculatorsoup.com/calculators/statistics/variance-calculator.php</a><BR>\n" );
document.write( "Separate the data values with a comma and not a semicolon.<BR>\n" );
document.write( "Feel free to explore other such calculators.<BR>\n" );
document.write( "A spreadsheet is another good option.\r<BR>\n" );
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document.write( "This article talks about the sample variance on a TI84<BR>\n" );
document.write( "<a  rel=nofollow HREF=\"https://www.statology.org/sample-variance-ti-84/\">https://www.statology.org/sample-variance-ti-84/</a><BR>\n" );
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