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# Mean, Median, Mode, And Range

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Show's how to find mean, median, mode and range.

Show's how to find mean, median, mode and range.

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Statistics
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### Transcript

• 1. Mean... Median... Mode... Range... What do they mean??
• 2. Mean...
• The average of a set of numbers
• 3. How to  find the mean...
• Add all the numbers in the set together
• Divide the sum by the number of numbers in the set
• The quotient is the mean of the set of numbers
• Example: 20, 15, 25
• Add 20 + 15 + 25 = 60
• Divide 60 by 3
• The mean is 20
• 4. Median...
• Is the number that is in the middle of a set of numbers (Note: The numbers must be in numerical order)
• If two numbers make up the middle of a set of numbers then the median is the average of these two numbers
• 5. Find the median...
• Example 1
• 10, 15 , 20
• The median of the set of numbers is 15
•
• Example 2
• 10, 15 , 20 , 25
• Add 15 + 20 = 35
• Divide 35 by 2 = 17.5
• The median of the set of numbers is 17.5
• 6. Mode...
• The number in a set of numbers that occurs the most often. (Note: Putting the numbers in order will help to identify the mode)
• 7. Identify the mode...
• Example:
• 10, 15, 10, 15, 20, 25, 15, 30
• 10, 10, 15 , 15 , 15 , 20, 25, 30
•
• 15 is the mode of this set of numbers because it is the number that occurs the most.
• 8. Range...
• The difference between the highest and lowest numbers in a set of numbers (Note: Putting the numbers in numerical order will help)
• 9. Find the range...
• Subtract the lowest number from the highest number in a set of numbers
• Example:
• 10 , 15, 20, 25, 30. 35, 40, 45, 50
• 50 - 15 = 40
• 40 is the range of this set of numbers
• 10. It's Time to Practice...
• 10, 5, 25, 50, 15, 10, 40, 35, 10, 20
• 5, 10, 10, 10, 15, 20, 25, 35, 40, 50
• What is the mean?
• What is the median?
• What is the mode?
• What is the range?