document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1181811>Question 1181811</A>: <I><SPAN STYLE=\"word-break: break-all;\"> 15.2, 18.8, 19.3, 19.7, 20.2, 21.8, 22.1, and 29.4<BR>\n" );
document.write( " Calculate the standard deviation of the time it took for the 8 <BR>\n" );
document.write( "participants to solve the puzzle. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #811692 by </B><A HREF=/tutors/aboutme.mpl?userid=Boreal><B>Boreal(15235)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Boreal><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=Boreal><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=811692\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Mean is 20.8125<BR>\n" );
document.write( "sd for a sample is to take the difference of each value from the mean, square it, add them all up and divide by 7.  Then take the square root of the value. For a population, divide by 8 and then take the square root.<BR>\n" );
document.write( "sd for sample is 4.07; for a population 3.81. The asker probably wants the first value. </SPAN>\n" );
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