document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1107408>Question 1107408</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Hello, see problem below\r<BR>\n" );
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document.write( "The following data represent the number of children in a sample of 10 families from Chicago: 4, 2, 1, 1, 5, 3, 0, 1, 0, and 2.\r<BR>\n" );
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document.write( "Compute the variance of the data. Place your answer, rounded to two decimal places, in the blank.\r<BR>\n" );
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document.write( "I have tried this problem more than one time and it getting 2.49 and i was told it should be 2.77. \r<BR>\n" );
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document.write( "These are the steps I took to complete it:\r<BR>\n" );
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document.write( "The sum of the values is 19 and the total number of values is 10 that gives me a mean of 1.9. Then I subtracted the mean from each value then took the square root of the result. Then I added all the squared results and I got 24.9, divided that by 10 to get the variance of 2.49\r<BR>\n" );
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document.write( "If I missed something, please let know.  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #722473 by </B><A HREF=/tutors/aboutme.mpl?userid=rothauserc><B>rothauserc(4718)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=rothauserc><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=rothauserc><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=722473\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> variance is the average of the squared differences from the mean<BR>\n" );
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document.write( "first calculate the mean<BR>\n" );
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document.write( "mean = (4 +2 +1 +1 +5 +3 +0 +1 +0 +2)/10 = 1.9<BR>\n" );
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document.write( "variance = (4-1.9)^2 +(2-1.9)^2 +(1-1.9)^2 +(1-1.9)^2 +(5-1.9)^2 +(3-1.9)^2 +(0-1.9)^2 +(1-1.9)^2 +(0-1.9)^2 +(2-1.9)^2 / 10 = 2.49<BR>\n" );
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document.write( "you are correct<BR>\n" );
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