document.write( "Question 859825: A sample of data has a standard deviation of 79. If you were to multiply all of the scores in the data set by factor of 68, what would the new standard deviation be?
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document.write( "How do I figure this problem? Do you multiply the standard deviation by the factor of 68? \n" );
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Algebra.Com's Answer #517975 by Theo(13342)![]() ![]() You can put this solution on YOUR website! i believe so. \n" ); document.write( "check out the following: \n" ); document.write( " \r\n" ); document.write( "data: \r\n" ); document.write( "N A B B/A\r\n" ); document.write( "1 5 25 5\r\n" ); document.write( "2 10 50 5\r\n" ); document.write( "3 15 75 5\r\n" ); document.write( "4 20 100 5\r\n" ); document.write( "5 25 125 5\r\n" ); document.write( "6 30 150 5\r\n" ); document.write( "7 35 175 5\r\n" ); document.write( "statistics:\r\n" ); document.write( " A B C \r\n" ); document.write( "mean 20 100 5\r\n" ); document.write( "variance 116.6666667 2916.666667 25\r\n" ); document.write( "standard deviation 10.8012345 54.00617249 5\r\n" ); document.write( " \n" ); document.write( "data in column A has been multiplied by 5 times in column B. \n" ); document.write( "The mean of B is 5 times the mean of A. \n" ); document.write( "The variance of B is 25 times the variance of A. \n" ); document.write( "The standard deviation of B is 5 times the variance of A.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Easiest way to find out the relationships is to create a very simple data set and then apply the measure and see the impact on the statistics.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "In the above, I created a simple data set and then multiplied that data set bgy 5 and then looked at the impact on the statistics.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "There is some information somewhere about the impacts of doing different things with data sets but I was unable to find it.\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |