Let us first <u>define</u> what any of these terms mean.
The <u>mean</u> is found by adding all the numbers in the set, and dividing the sum by how many numbers are found in the set.
> Given set {5, 12, 6, 3, 8, 16, 8, 6}, the sum of the numbers is 5 + 12 + 6 + 3 + 8 + 16 + 8 + 6 = 64. 64 ÷ 2 = 32. Thus, the mean is 32.
The <u>median</u> is found by finding the number in the middle of the set, and dividing it by 2. This is easy in odd numbers as there is only one number in the middle that is the same amount of numbers left and right proportionally. However, in even numbers, there are two middles to be proportional. If it as an even number, then add the 2 middles together, and divide by 2.
> Given set {5, 12, 6, 3, 8, 16, 8, 6}, this set has an even number of numbers in the set. Thus, the middles are 3 and 8. 3 + 8 = 11, and 11 ÷ 2 = 5.5. Thus, the median is 5.5.
The <u>mode</u> is the number that most frequently appears in the set. In this case, we have 2 frequent numbers. That is 6 and 8. They both appear 2 times separately. Thus, 6 and 8 are the modes of this set.
The <u>range</u> is the difference (i.e subtraction) between the largest number on the set and the smallest number on the set.
> Given set {5, 12, 6, 3, 8, 16, 8, 6}, the range is 16-3 or 13. Thus, the range is 13.
Now that we have the definitions, we can compute the other set very easily.
> Given set {2, 7, 4, 11, 12, 4, 6}, the mean is 18.
> Given set {2, 7, 4, 11, 12, 4, 6}, the median is 5.5.
> Given set {2, 7, 4, 11, 12, 4, 6}, the mode is 4.
> Given set {2, 7, 4, 11, 12, 4, 6}, the range is 10.
Hope it helped!
