document.write( "Question 141038: how to get the mean,median,mode and range??????
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Algebra.Com's Answer #102690 by Edwin McCravy(20086) $\"\"$ $\"About$
You can put this solution on YOUR website!
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document.write( "The mean is just the ordinary average that you \r\n" );
document.write( "learned how to find in lower grades in school.\r\n" );
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document.write( "\"Median\" sound like \"middle\"\r\n" );
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document.write( "\"Mode\" sounds like \"most\".\r\n" );
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document.write( "To find the mean: \r\n" );
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document.write( "1. Count the numbers.\r\n" );
document.write( "2. Add the numbers.\r\n" );
document.write( "3. Divide the result of 2 by the result of 1.\r\n" );
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document.write( "Example:  \r\n" );
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document.write( "Find the mean of the numbers 3.7, 5.6, 2.4, 6.9\r\n" );
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document.write( "1. We count them, and find there are 4 numbers.\r\n" );
document.write( "2. We add them, 3.7 + 5.6 + 2.4 + 6.9, and get 18.6\r\n" );
document.write( "3. We divide 18.6 by 4 and get 4.65.\r\n" );
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document.write( "So 4.65 is the mean.\r\n" );
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document.write( "To find the median:\r\n" );
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document.write( "1. Arrange the numbers in order smallest to largest, it doesn't\r\n" );
document.write( "   matter which.\r\n" );
document.write( "2. Count the numbers\r\n" );
document.write( "3. If there are an ODD number of numbers, the median is the ONE middle\r\n" );
document.write( "   number.\r\n" );
document.write( "4. If there are an EVEN number of numbers, the median is the MEAN of\r\n" );
document.write( "the TWO middle numbers.\r\n" );
document.write( "   number.\r\n" );
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document.write( "Example 1:\r\n" );
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document.write( "Find the median of the numbers:\r\n" );
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document.write( "              47, 39, 83, 76, 89, 7, 19\r\n" );
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document.write( "1. We arrange the numbers in order smallest to largest:\r\n" );
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document.write( "              7, 19, 39, 47, 76, 83, 89\r\n" );
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document.write( "2. We count the numbers, and get 7.\r\n" );
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document.write( "3. 7 is an odd number so, the median is the number\r\n" );
document.write( "   right in the middle of the ordered list in step 1,\r\n" );
document.write( "   which is 47.\r\n" );
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document.write( "Example 2:\r\n" );
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document.write( "Find the median of these numbers:\r\n" );
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document.write( "            15.3, 18.7, 29.4, 38.4, 18.8, 28.3\r\n" );
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document.write( "1. We arrange the numbers in order largest to smallest:\r\n" );
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document.write( "            38.4, 29.4, 28.3, 18.8, 18.7, 15.3\r\n" );
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document.write( "2. We count the numbers, and get 6.\r\n" );
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document.write( "3. 6 is an even number, so the median is the mean of\r\n" );
document.write( "   the middle two numbers 28.3 and 18.8.\r\n" );
document.write( "   So we count those two middle numbers and get 2, of course\r\n" );
document.write( "   We add them, 28.3 + 18.8 and get 47.1.\r\n" );
document.write( "   We divide 47.1 by 2 and get 23.55.\r\n" );
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document.write( "So the median is 23.55.\r\n" );
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document.write( "To find the mode:\r\n" );
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document.write( "If all the numbers are different, then there is no mode.\r\n" );
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document.write( "If any of the numbers are the same, choose the ones that occur\r\n" );
document.write( "the MOST number of times.  If there is a tie between two numbers\r\n" );
document.write( "then there are TWO modes, and the data is said to be bimodal.\r\n" );
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document.write( "Example 1:\r\n" );
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document.write( "Find the mode of these numbers:\r\n" );
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document.write( "4,7,9,2,4,7,7,2,6\r\n" );
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document.write( "The 7 occurs 3 times which is more than any of the others,\r\n" );
document.write( "so the mode is 7.\r\n" );
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document.write( "Example 2:\r\n" );
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document.write( "Find the mode of these numbers:\r\n" );
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document.write( "15, 18, 23, 17, 9, 68, 19\r\n" );
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document.write( "All the numbers are different, so there is no mode.\r\n" );
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document.write( "Example 3:\r\n" );
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document.write( "Find the mode of these numbers:\r\n" );
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document.write( "6, 7, 8, 7, 6, 8, 8, 2, 7\r\n" );
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document.write( "There are two modes, 7 and 8. So\r\n" );
document.write( "this set of numbers is said to be \"bimodal\".\r\n" );
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document.write( "To find the range.\r\n" );
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document.write( "1. Locate the largest and smallest numbers.\r\n" );
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document.write( "2. Subtract the smallest number from the largest number.\r\n" );
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document.write( "Example:\r\n" );
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document.write( "Find the range of the numbers:\r\n" );
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document.write( "              47, 39, 83, 76, 89, 7, 19\r\n" );
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document.write( "1. The largest number is 89 and the smallest is 7.\r\n" );
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document.write( "2. We subtract 89 - 7 and get 82.\r\n" );
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document.write( "So the range is 82.\r\n" );
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document.write( "Edwin
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