document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=136825>Question 136825</A>: <I><SPAN STYLE=\"word-break: break-all;\"> a)Find the standard deviation of the following set of data.\r<BR>\n" );
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document.write( "180, 187, 175, 186, 177, 196, 166\r<BR>\n" );
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document.write( "b)The results on an English exam are normally distributed.  the z-scores for some of the students are shown below.\r<BR>\n" );
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document.write( "Jan 1.3       Kim 1.8       Lou -1.1      May 0.0\r<BR>\n" );
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document.write( "Nan  1.1      Fay -1.7      Gia 1.1      Sue -1.8\r<BR>\n" );
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document.write( "Which of the students scored below the mean?\r<BR>\n" );
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document.write( "Thanka in advance<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 #100137 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=100137\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> a)Find the standard deviation of the following set of data. <BR>\n" );
document.write( "180, 187, 175, 186, 177, 196, 166 <BR>\n" );
document.write( "add the numbers and divide the sum by 7 to get the mean of 181<BR>\n" );
document.write( "standard deviation is 9.6954...<BR>\n" );
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document.write( "b)The results on an English exam are normally distributed. the z-scores for some of the students are shown below. <BR>\n" );
document.write( "Jan 1.3 Kim 1.8 Lou -1.1 May 0.0 <BR>\n" );
document.write( "Nan 1.1 Fay -1.7 Gia 1.1 Sue -1.8 <BR>\n" );
document.write( "Which of the students scored below the mean? <BR>\n" );
document.write( "When you have z-scores the mean corresponds to \"0\" because <BR>\n" );
document.write( "the mean is zero distance from the mean.<BR>\n" );
document.write( "So all the students with negative z-scores scored below the mean.<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
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