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# Measures of central tendency

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Introduces students to four measures of central tendency

Introduces students to four measures of central tendency

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Statistics
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### Transcript

• 1. Measures of Central Tendency
By Tyler Torek
Statistics
• 2. Four Measures of Central Tendency
These measures help describe data.
• 6. Mean
the of a set of the data
average
3, 4, 4, 10, 15, 16, 18
70  7 =
10
Just
• 7. Median
the number
middle
3, 4, 4, , 15, 16, 18
10
10 is the median
Justfind the middle
• 8. Median
numbers not in sequence must be ordered
6, 12, 2, 6, 4
2, 4, , 6, 12
6
6 is the median
• 9. Mode
the number that repeats the
most
3, 4, 4, 10, 15, 16, 18
4 is the mode
The number that appears the most
• 10. Mode
there may be more than one mode
3, 3, 4, 4, 4, 7, 9, 9, 9
4 & 9 are the modes
• 11. Range
the difference between the and
least greatest
, 4, 4, 10, 15, 16,
3 18
18 – 3 = 15
Just subtract largest and smallest
• 12. Find the all four measures of central tendency below.
1, 1, 3, 7, 11, 13, 20
Mode
56  7 = 8
Median
Mean
20 – 1 = 19
Practice
Range
• 13. Bibliography
Dr. Clark,
This information was created from memory. No reference sources were needed.