document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=137525>Question 137525</A>: <I><SPAN STYLE=\"word-break: break-all;\"> This question is not from a text book. <BR>\n" );
document.write( "I am trying to find the standard deviation for this set of data. 75,65,50,90,80,60,70,85,80,85. The answer that i came up with is 42400 divide by 10. is this the way how?<BR>\n" );
document.write( "Thank you so much for your help. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #100621 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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=100621\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> The standard deviation for that set of numbers is 12.649....<BR>\n" );
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document.write( "You need to find the mean of the numbers, which is 74<BR>\n" );
document.write( "You need to find the differenece between 74 and each of the numbers in the set.<BR>\n" );
document.write( "You need to square each of those differences.<BR>\n" );
document.write( "You need to add up those squared values<BR>\n" );
document.write( "You need to divide by (10-1) = 9 is you want the sample standard deviation<BR>\n" );
document.write( "or by 10 if you want the population standard deviation.<BR>\n" );
document.write( "You need to take the square root of the result.<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );