document.write( "Question 1042200: Please help me on this i am confused on parts A through F. This is all one problem.\r
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document.write( "2. Using the following frequency table for a class of Beginning Algebra students’ test scores,
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document.write( "exam score 70 74 78 82 86 90 96 100
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document.write( "frequency 6 6 4 1 6 5 5 2\r
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document.write( "calculate the following:
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document.write( "a) average _________\r
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document.write( "b) 25th percentile _________\r
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document.write( "c) median _________
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document.write( "d) 75th percentile _________\r
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document.write( "e) 40th percentile _________\r
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document.write( "f) 80th percentile _________
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Algebra.Com's Answer #657198 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! 2. Using the following frequency table for a class of Beginning Algebra students’ test scores, \n" ); document.write( "exam score 70 74 78 82 86 90 96 100 \n" ); document.write( "frequency 6 6 4 1 6 5 5 2 \n" ); document.write( "Multiply each score number by its frequency \n" ); document.write( "Totals.........420......444.....452.....82......516.....450.....480.....200\r \n" ); document.write( "\n" ); document.write( "calculate the following: \n" ); document.write( "a) average Add those \"Total\" numbers and divide by the sum of the frequency numbers to get:: 74.68___ \n" ); document.write( "b) 25th percentile = 0.25*35 = 8.75 = the 9th element is order = 74 \n" ); document.write( "--------------------------------------------------------- \n" ); document.write( "c) median is the middle score or aver of 17th and 18th = (82+86)/2 = 84 \n" ); document.write( "78d) 75th percentile = 0.75*35 = 27th element = 9 \n" ); document.write( "e) 40th percentile = 0.4*35 = 14 element = 78_________ \n" ); document.write( "f) 80th percentile = 96_________ \n" ); document.write( "Note: Some would say the answer to \"f\" is 90. Depends on how \n" ); document.write( "you define percentile. \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( " \n" ); document.write( " |