document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=311020>Question 311020</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Find the variance and standard deviation of the given set of data to the nearest tenth.\r<BR>\n" );
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document.write( "{520, 260, 380, 440, 150, 570, 780}<BR>\n" );
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document.write( "A.	variance = 192.3, standard deviation = 36,991.8<BR>\n" );
document.write( "B.	variance = 43,157.1, standard deviation = 207.7<BR>\n" );
document.write( "C.	variance = 36,991.8, standard deviation = 192.3<BR>\n" );
document.write( "D.	variance = 36,991.8, standard deviation = 18,495.9 \r<BR>\n" );
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document.write( "I am totally confused on how to solve this. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #222440 by </B><A HREF=/tutors/aboutme.mpl?userid=Fombitz><B>Fombitz(32388)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Fombitz><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=Fombitz><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=222440\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Mean=442.9 (add the values and divide by 7)<BR>\n" );
document.write( "Variance=36991.8 (for each value calculate the difference between the value and the mean, square it, sum for each value, and divide by the number of values) <BR>\n" );
document.write( "St.Dev.=192.2 (Take the square root of the variance)<BR>\n" );
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document.write( "C) is the correct answer.  </SPAN>\n" );
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