Blog 4

Hello class, my name is Professor Montgomery and today we will be learning about the concepts of mean, median, and mode.  These concepts are very important because they are used in math when trying to find an average in a set of numbers, the middle number in a set of numbers. and the most common number in a set.

To teach these concepts I will use an example of a random set of numbers:

Using this set of numbers we will find the mean, median, and the mode.

2, 2, 2, 4, 4, 5, 6, 6, 7, 9, 9

First, to find the median you must cross out the numbers starting at the highest then jumping to lowest, then back to the next highest, until there is one number left.

In this case, the number that is still left after this process is 5.  Therefore 5 is the median.

Next, to find the mode, look at the set of numbers and see which number appears the most number of times.  In this case, the mode is 2 because it appears three times, which is more frequently than any other number.

Lastly, to find the mean, which also means the average, you must add up all of the numbers in the set and divide the result by the amount of numbers in the set.

For this example, we would add up 2 + 2 + 2 + 4 + 4 + 5 + 6 + 6 + 7 + 9 + 9 which equals 56.

Then we will divide 56 by 11 (which is the number of numbers in the set).
This equals 5.0909090909 which I would round to about 5.1.

Now we're done!