document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1077764>Question 1077764</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The income (in Rands) of seven drivers during the week are 1080,2000,1580,1540,2500,1800,1580. Calculate standard deviation of income   can you please correct me from the answer I have \r<BR>\n" );
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document.write( "1080+2000+1580+1540+2500+1800+1580=12080/7=1725.71\r<BR>\n" );
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document.write( "1080-1725.71=(-645.71)^2 =416941.40<BR>\n" );
document.write( "2000-1725.71=(274.29)^2 =75235<BR>\n" );
document.write( "1580-1725.71=(-145.71)^2 =21231.40<BR>\n" );
document.write( "1540-1725.71=(-185.71)^2 =34488.40<BR>\n" );
document.write( "2500-1725.71=(774.29)^2=599525<BR>\n" );
document.write( "1800-1725.71=(74.29)^2=5519<BR>\n" );
document.write( "1580-1725.71=(-145.71)^2=21231.40\r<BR>\n" );
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document.write( "S^2=1174171.60/7<BR>\n" );
document.write( "   = 167738.80<BR>\n" );
document.write( "S=&#8730;167738.8<BR>\n" );
document.write( "  = 409.56<BR>\n" );
document.write( "Therefore standard deviation is 409.56 please correct me </SPAN>\n" );
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