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### Course: Statistics and probability>Unit 3

Lesson 1: Measuring center in quantitative data

# Mean, median, & mode example

Here we give you a set of numbers and then ask you to find the mean, median, and mode. It's your first opportunity to practice with us! Created by Sal Khan and Monterey Institute for Technology and Education.

## Want to join the conversation?

• I really have a hard time remembering the differences between these three. Does anyone have a suggestion like a riddle or rap etc. to help me to remember the three?
• Here is what we use in class:
Hey diddle diddle,
The median is the middle
You add and divide for the mean
The mode is the one that appears the most
And the range is the difference in between
• I have a question with regard to the mode ():
I can understand it if there is one number which appears most, but what if you have 2 numbers that appears as much?
For example: 1,2,2,4,4,7,8
What's the mode in this case?
• All your answers are great, but my accelerated math teacher says that you can have more than one mode.
• can ther be more than 1 mode
• yes their can be more than one it's just you have to find the number in between them.
• i dont under stand what it is asking it makes no sense can you make it more simple
• Mean = Average

Median = Middle, and if you have 2 numbers in the middle, find the mean of those 2 numbers

Mode = Most common number
• What happens if there are two different numbers that apperar the same number of times? For example, 08767424
• You can have more than on mode, it this case there are two - 7 and 4 (called bimodal).
• What happens when two same numbers, example 23 and 23 are the Median, what would be the answer??
• The median is the middle number in a data set. If there are two "middle" numbers, you take their average. So, for your problem, the median is 23.
• think you
• I dont get mode
• Mode is most, so you need to find the most common on the list. Did that help answer your question?
• How do you find mode when no numbers repeat
• If no numbers repeat (and there is more than one number) then most would consider the set to have no mode**. This would also be the case for something like { 2, 2, 2, 3, 3, 3, 8, 8, 8} where all numbers appear an equal number of times.

** I have seen some texts that would say all the numbers would be modes in this case, but that is not the typical definition.