document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1018800>Question 1018800</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A single fair die is tossed once. Let Y be the number facing up. Find the expected value and variance of Y  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #634866 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=634866\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Expected value= x*p(x)<BR>\n" );
document.write( "it is (1/6)(1+2+3+4+5+6)=3.5<BR>\n" );
document.write( "variance is <BR>\n" );
document.write( "sum of (x-mean)^2/n<BR>\n" );
document.write( "(1/6)(2.5^2+1.5^2+0.5^2+0.5^2+1.5^2+2.5^2)=<BR>\n" );
document.write( "(1/6)*17.50=2.92<BR>\n" );
document.write( "E(x)=3.5<BR>\n" );
document.write( "V(x)=2.92<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );