document.write( "Question 1176386: Consider the following grouped frequency distribution, which portrays the duration (in minutes) of 50 lectures
\n" ); document.write( "delivered by a Chemistry professor.\r
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\n" ); document.write( "30.00 < 40.00 3
\n" ); document.write( "40.00 < 50.00 7
\n" ); document.write( "50.00 < 60.00 18
\n" ); document.write( "60.00 < 70.00 13
\n" ); document.write( "70.00 < 80.00 8
\n" ); document.write( "80.00 < 90.00 1\r
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\n" ); document.write( "\n" ); document.write( "Using computational formulae, calculate the:\r
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Algebra.Com's Answer #803217 by ewatrrr(24785) $\"\"$ $\"About$

You can put this solution on YOUR website!

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document.write( "Using an Excel Spreadsheet:(takes less than a minute)
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document.write( "35	3	105
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document.write( "45	7	315
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document.write( "55	18	990
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document.write( "65	13	845
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document.write( "75	8	600
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document.write( "85	1	85
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document.write( "	50	2940
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document.write( "M = 2940/50 = 58.8
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