1. Mean, Median, Mode, and Range

2. Measures of Central Tendency
Circle the measures of central tendency below. (Hint: There are only 3 measures of central tendency.)
Mode
Mean
Range
Median

3. outlier What’s an outlier?!
out-   pref.  In a way that surpasses, exceeds, or goes beyond: outdistance.
-er   suff. One that undergoes a specified action: broiler.
–noun 1. a person or thing that lies outside.  
outlier
lie verb.  to be found or located in a particular area or place: The fault lies here.
number

4. Find the outlier(s)
12, 22, 40, 17, 29, 72, 38
90, 80, 75, 7, 67, 82
101, 210, 184, 18, 156, 989, 204

5. Matching!
Mean
Middle
Median
Difference
Mode
Most
Average
Range

6. 13 6 7 Problem 1 Mean = 9 Median = 7 Mode = 6 and 13 Range = 7
Children
Ages
Harry 13
Ron 6
Hermione 7
Ginny
Neville
Mean = 9
Median = 7
Mode = 6 and 13
Range = 7

7. Problem 2 13 7 17 19 15 11 Mean = 12 Median = 12 Mode = 7 Range = 12
Homerooms
Pizza Orders
Everdeen 13
Mellark 7
Abernathy 17
Snow 19
Coin
Hawthorne 15
Trinket 11
Crane
Mean = 12
Median = 12
Mode = 7
Range = 12

8. Visitors to the Art Museum (thousands)
Problem 3
Visitors to the Art Museum (thousands)
Mean = 5,000
Median = 4,000
Mode = 3,000
Range = 10,000

9. 2 6 5 4 3 0 1 Problem 4 Snowfall in Inches Mean 3 inches Median Mode
Mean
3 inches
Median
Mode
none
Range
6 inches

10. Summary of the Measures of Central Tendency
Best used to describe data when…
Mean
The data has no outliers
Median
The data has outliers
Mode
The data has many repeated numbers