document.write( "Question 962516: For the following set of data, find the population variance, to the nearest 10th.\r
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document.write( "142, 161, 159, 115, 140, 154, 167 \n" );
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Algebra.Com's Answer #588121 by amarjeeth123(570) ![]() You can put this solution on YOUR website! The set of data is 142, 161, 159, 115, 140, 154, 167. \n" ); document.write( "Mean=142+161+159+115+140+154+167/7=148.285 \n" ); document.write( "Distance from the mean for each data point is (142-148.285),(161-148.285),(159-148.285),(115-148.285),(140-148.285),(154-148.285),(167-148.285) \n" ); document.write( "Distance from the mean for each data point is -6.285,12.715,10.715,-33.285,-8.285,5.715,18.715 \n" ); document.write( "Variance =((-6.285)^2+(12.715)^2+(10.715)^2+(-33.285)^2+(-8.285)^2+(5.715)^2+(18.715)^2)/7 \n" ); document.write( "=(39.501+161.671+114.811+1107.891+68.641+32.661+350.251)/7 \n" ); document.write( "=1875.427/7 \n" ); document.write( "=267.918 \n" ); document.write( "=267.9(rounded off to the 10th) \n" ); document.write( " |