September 3, 2009
No CommentsHow to Find the Mean, Median, and Mode in a Set of Numbers
Description
This video gives very clear examples and explanations on how to find the mean, median, and mode in a set of numbers, using both number sets and graphs to illustrate how to find the mean, median, and mode. Both examples for basic arithmetic uses and complicated statistics uses are given, as well as examples of tools that can be used to help solve these problems.
Overview
The mean, median, and mode are sometimes known as the average, the middle, and the most. The mean is the average of a set of numbers. To find the average, you need to add up all the numbers in the set and then divide the sum by how many numbers there are. For example, take the set 1, 2, 3. 1 + 2 + 3 = 6. Then divide 6 by 3, as that is how many numbers there are. The mean is 2. The median is the middle of a set of numbers. The easiest way is to set up all the numbers in value of lowest to highest, and cross off numbers on each end until you are left with one in the middle. In the event that you are left with two numbers in the middle, you need to take the mean of those two numbers. For example, the set 1, 2, 3, 4. The two middle numbers are 2 and 3. 2 + 3 = 5. The median would be 5/2, or you can put that in decimal form. The mode is the number that occurs the most. You may have more than one number for the mode. You may also have no mode. In the set 1, 2, 2, 2, 2, 3, 3, 4, 5, 5, 5, 6, 6, 6, 6, the mode is both 2 and 6 because those numbers occur the most in the set. Mean, median, and mode are most commonly used in data sets and statistics.
