Mean, Median, Mode, and Range

Mean:
The mean of a group of numbers is the average of the numbers.
eg., 3, 5, 6, 8, 13 add all the numbers together (3+5+6+8+13=35)
 divide the total (35) by the number of numbers added together (5) so 35 ÷ 5 = 7
The mean is 7.

Median:
The median of a group of numbers is the number that is exactly in the middle when the numbers are arranged numerically.
eg., 3, 5, 6, 8, 12 if the set contains an odd number of numbers, the median is the middle number,
 the physical middle number is 6
The median is 6.5.
 if the set contains an even number of numbers, the median is still the middle
eg., 3, 5, 6, 7, 8, 12
(6 + 7) ÷ 2 = 6.5The median is 6.5.

Mode:
The mode of a group of numbers is the number that appears most often.
eg., 3, 5, 5, 6, 8, 12 the number that is the most common is 5
The mode is 5.
(If there are several numbers that are tied for being the mode, then they are all the mode.)
 the number that is the most common is 5

Range:
The range of a group of numbers is the difference between the biggest number and the smallest number.
eg., 3, 5, 6, 8, 12 subtract the biggest number (12) from the smallest number (3)
12  3 = 9The range is 9.
 subtract the biggest number (12) from the smallest number (3)
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Mean, Median, Mode, and Range — Making the Most of the Muddle
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