Blog 3

Hi, I am Professor Otero and today I will be teaching mean, median, mode and range.
 first, lets define these terms.
Mean- also known as the average is the sum of a set of numbers divided by the amount of numbers in the set
Median- is the number that is in the exact middle of the set when a set of numbers are in numerical order from least to greatest.
Mode- is the number that appears most in a set of numbers
Range- is the difference between the biggest number and the smallest.

Here is an example...
Consider this set of number

7 4 1 6 7 2 5 9

finding the MEAN

1. find the sum of the numbers:
7 + 4 + 1 + 6 + 7 + 2 + 5 + 9 = 41

2. divide the sum by the amount of numbers in the set. (8)
41/8 = 5.12

Mean = 5.12

finding the MEDIAN

1. put the numbers in numerical order from least to greatest
1 2 4 5 6 7 7 9

(because there is an even amount of number, take the average of the middle two)

Median = 5.5

finding the MODE

1. identify what number appears the most times in the set. (note: there can be more then one mode, or no mode in a set of numbers)
 1 2 4 5 6 7 7 9

Mode = 7

finding the RANGE

1. subtract the largest number from the smallest number in the set.
9 - 1 = 8

Range = 8

... and then you are done!