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Finding The Mean In A Data Set Essay

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Math

A) To find the mean, we add up all the numbers and divide by the total number of numbers:

5 + 7 + 3 + 8 + 2 + 3 + 3 + 1 + 9 = 41

There are 9 numbers in the list, so the mean is:

mean = 41/9 ? 4.56

To find the median, we first need to put the numbers in order from smallest to largest:

1, 2, 3, 3, 3, 5, 7, 8, 9

There are 9 numbers in the list, so the median is the middle number, which is:

median = 3

To find the mode, we look for the number that appears most often in the list. In this case, there is one number that appears three times, so the mode is:

mode = 3

B) To find the mean, we add up all the numbers and divide by the total number of numbers:

104 + 139 + 145 + 150 + 167 + 205 + 205 + 20 = 1135

There are 8 numbers in the list, so the mean is:

mean = 1135/8 ? 141.88

To find the median, we first need to put the numbers in order from smallest to largest:

20, 104, 139, 145, 150, 167, 205,...

…21 + 24 + 27 + 27 + 27 + 27 + 28 + 28 + 29 + 33 + 33 + 35 + 38 + 39 + 40 + 41 + 57 + 58 + 58 + 58 + 59 + 59 = 862

There are 27 numbers in the list, so the mean is:

mean = 862/27 ? 31.93

To find the median, we first need to put the numbers in order from smallest to largest:

10, 13, 15, 15, 20, 21, 24, 27, 27, 27, 27, 28, 28, 29, 33, 33, 35, 38, 39, 40, 41, 57, 58, 58, 58, 59, 59

There…

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