ANSWER #1 of 1

The mean of the data set is its average.

To find the mean you add up all the numbers and divide the answer by how many numbers you have.

Try it! Add (1, 2, 3, 4, 5) on the calculator and then divide the answer by 5. (The / key means divide.)

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The Median is the number which is in the exact middle of the data set.

In our sample set (1, 2, 3, 4, 5), 3 is the number which is exactly in the middle, so 3 is the median of this set.

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The Mode is the number that appears the most often if you are working with only one variable.

We are working with one variable, a set of numbers. To show how to figure out the mode, we need to change our sample set because each number only appears once in it.

THE NEW SAMPLE SET: (2, 4, 4, 6, 8, 10).

4 appears more than any other number in this set so 4 is the mode of the set.

The range of the data set is the difference between the largest and smallest number in the set.

To find the range, you simply subtract the smallest number from the largest number in the set.

In our sample data set the largest number is 5 and the smallest number is 1.

(1, 2, 3, 4, 5)

5 - 1 = 4

The range of this set is 4.