### Melanie's Measures of Central Tendency

**Mean**- the average of a set of data

To find the mean:

1. arrange in ascending order (optional)

2. add all data together

3. divide the sum of all data, by how many pieces of data there are

4. the final result is the mean

*if you have an outlier it will change the mean*

**Median**- the number in the middle of a set of data

To find the median:

1. arrange in ascending order (IMPORTANT)

2. cross out one piece of data from the left, then the right, then the left, and so on, until you reach the middle number

3. the final result is the median

*if you have an even number of data, you'll end up with two middle numbers, so you need to find the middle of those two numbers (sum of two numbers, divided by 2)*

*if you have an outlier, use the median, instead of the mean, to find the average*

**Mode**- the number in a set of data, that appears the most

To find the mode:

1. arrange in ascending order

2. find the number that appears the most

3. the final result is the mode

*sometimes there could be MORE than one mode*

sometimes there is NO mode

sometimes there is NO mode

**Range**- the difference between the greatest and least piece of data in a set

To find the range:

1. arrange in ascending order

2. find the greatest and least piece of data

3. subtract the least piece of data from the greatest piece of data

4. the final result is the range

Here is a video, that shows how to find the mean, median, and mode:

Click here to play a game, that could help you remember how to find the mean, median, and mode.

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by the way, thanks to all the people for commenting :)

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