document.write( "Question 1082856: The high temperatures at the school were recorded every day last week as: 72, 78, 61, 48, 59, 76, 65. What is the variance (rounded to the nearest whole number) for the high temperature last week? \r
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document.write( "A) 110
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document.write( "B) 113
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document.write( "C) 114
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document.write( "D) 115 \n" );
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Algebra.Com's Answer #696887 by Boreal(15235)![]() ![]() You can put this solution on YOUR website! mean is the sum over 7 or 459/7=65.57 \n" ); document.write( "variance is sum of squares of the differences \n" ); document.write( "6.43^2 \n" ); document.write( "12.43^2 \n" ); document.write( "4.57^2 \n" ); document.write( "17.57^2 \n" ); document.write( "6.57^2 \n" ); document.write( "10.43^2 \n" ); document.write( "0.57^2 \n" ); document.write( "all added together and divided by 6. \n" ); document.write( "the result is 112.95 or 113 will be the answer \n" ); document.write( "B \n" ); document.write( "Alternatively, put the values into a list and do 1-variable stats STAT+CALC+1, and get 1-variable stats. Look at s, the sd, and square it to get the variance. \n" ); document.write( " |