1. Mean, Median, Mode, Range & Outlier

2. Vocabulary
Mean
Median
Mode
Range
Outlier

3. the sum of the data divided by the total number of elements
2, 5, 7, 8, 5, 9, 3, 4, 8, 5, 6, 9, 10, 20, 6, 5, 4, 8, 4, 2
Mean (average)
the sum of the data divided by the total number of elements
= 130
130 ÷ 20 = 6.5

4. DATA:
2, 5, 7, 8, 5, 9, 3, 4, 8, 5, 6, 9, 10, 20, 6, 5, 4, 8, 4, 2
Median (middle)
The middle number in an ordered set of data (or average of middle 2 numbers)
2, 2, 3, 4, 4, 4, 5, 5, 5, 5, 6, 6, 7, 8, 8, 8, 9, 9, 10, 20
5 + 6 = 11
11 ÷ 2 = 5.5

5. Easiest way to see is to put them in order….
DATA:
2, 5, 7, 8, 5, 9, 3, 4, 8, 5, 6, 9, 10, 20, 6, 5, 4, 8, 4, 2
Mode (most)
The number that occurs the most times in a set of data (could be multiple modes or no mode)
Easiest way to see is to put them in order….
2, 2, 3, 4, 4, 4, 5, 5, 5, 5, 6, 6, 7, 8, 8, 8, 9, 9, 10, 20

6. Range (difference) DATA:
2, 5, 7, 8, 5, 9, 3, 4, 8, 5, 6, 9, 10, 20, 6, 5, 4, 8, 4, 2
Range (difference)
The difference between the highest and lowest value in a set of data
Easiest way to see is to put them in order….
2, 2, 3, 4, 4, 4, 5, 5, 5, 5, 6, 6, 7, 8, 8, 8, 9, 9, 10, 20
20 – 2 = 18

7. Easiest way to see is to put them in order….
DATA:
2, 5, 7, 8, 5, 9, 3, 4, 8, 5, 6, 9, 10, 20, 6, 5, 4, 8, 4, 2
Outlier
A number that is much different than the test of the numbers. May skew the measurements
Easiest way to see is to put them in order….
2, 2, 3, 4, 4, 4, 5, 5, 5, 5, 6, 6, 7, 8, 8, 8, 9, 9, 10, 20

8. Top demanded TV shows of 2016
Rank
Name
Network
Total in millions 1
HBO
7.2 2
AMC
4.7 3
ABC
3.8 4
3.5 5 CW
3.1 6
CBS
2.9 7
Netflix
2.8 8
2.5 9
Korea
2.4 10
USA 11 12
2.1 13
MTV
Game of Thrones
The Walking Dead
Pretty Little Liars
Westworld
The Flash
Big Bang Theory OA
Stranger Things
Running Man
Suits
Arrow
Quantico
Teen Wolf

9. Mean Median Mode Range World’s Richest Athletes 2016
Total in millions
7.2
4.7
3.8
3.5
3.1
2.9
2.8
2.5
2.4
2.1
Add the numbers and divide by the number of elements
Mean = 3.2
Median
The middle number when the numbers are placed in order
Median= 2.8
Mode
The number that appears the most
Mode= 2.4
Range
The difference between the greatest and smallest number
Range = 5.1

10. Top Social Media Sites Rank Name Date Started Total in millions 1
Feb 2004
1,590 2
Feb 2005
1,000 3
Dec 2011
418 4
Oct 2010
400 5
May 2003 6
March 2006
320 7
Feb 2007
200 8
112 9
Sept 2011
100 10
March 2010
Facebook
You Tube
Google +
Instagram
LinkedIn
Twitter
Tumblr
Flickr
SnapChat
Pintrest

11. Mean Median Mode Range World’s Most Popular Sports
Total in millions
1,590
1,000
418
400
320
200
112
100
Add the numbers and divide by the number of elements
Mean = 464
Median
The middle number when the numbers are placed in order
Median= 760
Mode
The number that appears the most
Mode= 100 and 400
Range
The difference between the greatest and smallest number
Range = 1490

12. These are the scores from a math test:
75, 80, 89, 80, 96, 76, 99, 92, 86, 77, 87, 91, 80, 80, 90
You earned a score of 82. Your mom asks you how you did on the test compared to the rest of the class.
What can you tell her?

13. Mom, I did better than most 
Numerical Order:
75, 76, 77, 80, 80, 80, 80, 86, 87, 89, 90, 91, 92, 96, 99
Your score: 82
Mean:
1278 / 15 = 85.2
Median: 86
Mode: 80
Mom, I did better than most 