1. Measures of Central Tendency
Mean, Median, Mode, Range

2. Vocabulary Hey Diddle, Diddle, the median’s the middle
You add and divide for the mean
The mode is the one, that you see the most
And the range is the difference between

3. Mean – average Median – middle Mode – most Range – difference
Vocabulary
Mean – average Median – middle Mode – most Range – difference

4. Definition the sum of the data divided by the total number of elements
Mean (average)
the sum of the data divided by the total number of elements

5. How long is your last name?
Example
How long is your last name?
Allen 5 6
Howard 9
McPherson
Bell 4 6
Imwiko
Smith 5
Collins 7 7
Tucker
Jackson 6
Gonzalez 8
Matthews
Williams 8 8

6. 5 4 7 8 6 6 7 8 9 5 6 8 79 12 6.58 What is the sum of the numbers?
What is the mean number of letters in the last names of the students in our class? 5 4 7 8 6 6 7 8 9 5 6 8
What is the sum of the numbers? 79
How many numbers are there? 12
What is the sum divided by the number of elements?
6.58

7. How long is your first name?
Example
How long is your first name?
Kayla 5 6
Tanner 6
Kahlil
Ketrell 7 6
Lathan
Evan 4
Camryn 6 5
Sanaa
Kamal 5
Anthony 7
Adam
Justin 4 6

8. 5 7 6 7 6 6 5 4 6 4 5 6 67 12 5.58 What is the sum of the numbers?
What is the mean number of letters in the first names of the students in our class? 5 7 6 7 6 6 5 4 6 4 5 6
What is the sum of the numbers? 67
How many numbers are there? 12
What is the sum divided by the number of elements?
5.58

9. How many people live in your house?
Example
How many people live in your house?
Kayla
Tanner
Kahlil
Ketrell
Lathan
Evan
Camryn
Sanaa
Kamal
Anthony
Adam
Justin

10. What is the mean number of people who live in our houses?
What is the sum of the numbers?
How many numbers are there? 12
What is the sum divided by the number of elements?

11. Example US Representatives per State for the Original 13 Colonies
New Jersey 12
Connecticut 5
New York 27
Delaware 1
North Carolina 13
Georgia 14
Pennsylvania 18
Rhode Island 2
South Carolina 7
Maryland 8
Vermont
Massachusetts 9
Virginia 11

12. 128 13 9.8 What is the sum of the numbers? How many numbers are there?
What is the mean number of representatives of the original 13 colonies? 12 5 27 1 13 14 18 2 7 8 9 11
128
What is the sum of the numbers?
How many numbers are there? 13
What is the sum divided by the number of elements?
9.8

13. Example World’s Richest Athletes 2016 Rank Name Sport Nation
Total in millions 1
Soccer
Portugal
$88 2
Argentina
$81 3
Basketball
United States
$77 4
Tennis
Switzerland
$68 5
$56 6
Serbia 7
Football
$53 8
Golf 9 10
$50
Cristiano Ronaldo
Lionel Messi
LeBron James
Roger Federer
Kevin Durant
Novak Djokovic
Cam Newton
Phil Mickelson
Jordan Spieth
Kobe Bryant

14. 635 10 63.5 What is the sum of the numbers?
What is the mean?
Total in millions
$88
$81
$77
$68
$56
$53
$50
635
What is the sum of the numbers?
How many numbers are there? 10
What is the sum divided by the number of elements?
63.5

15. Example World’s Most Popular Sports Rank Name Where watched
Total in millions 1
Europe, Africa, Asia, America
3,500 2
Asia, Australia, UK
2,500 3
US, Canada, China, Phillipines
2,200 4
Europe, Africa, Asia, Australia
2,000 5
Europe, Americas, Asia
1,000 6
Asia, Europe, Americas, Australia
900 7
Asia, Europe, Africa, Americas
850 8
US, Japan, Cuba, Dominican Republic
500 9
United States
410 10
France, England, New Zealand, South Africa 11
Europe, Asia, America, Canada
390
Football (Soccer)
Cricket
Basketball
Field Hockey
Tennis
Volleyball
Table Tennis
Baseball
American Football
Rugby
Golf

16. 14,660 11 1,332.7 What is the sum of the numbers?
What is the mean?
Total in millions
3,500
2,500
2,200
2,000
1,000
900
850
500
410
390
What is the sum of the numbers?
14,660
How many numbers are there? 11
What is the sum divided by the number of elements?
1,332.7

17. Example Highest paid film actors Actor Film Year
Total Income (millions)
The Matrix
2003
$156
Sixth Sense,
1999
100
Mission Impossible 2
2000
War of the Worlds
2005
Men in Black 3
2012
Gravity
2013 70
Forrest Gump
1994
Mission Impossible 1
1996
Indiana Jones and the Kingdom of the Crystal Skull
2008 65
Batman
1989 60
Inception
2010 59
Pirates of the Caribbean: On Stranger Tides
2011 55
The Avengers 50
Titanic
1997 40
Saving Private Ryan
1998
Alice in Wonderland
Keanu Reeves
Bruce Willis
Tom Cruise
Tom Cruise
Will Smith
Sandra Bullock
Tom Hanks
Tom Cruise
Harrison Ford
Jack Nicholson
Leonardo DiCaprio
Johnny Depp
Robert Downey Jr
Leonardo DiCaprio
Tom Hanks
Johnny Depp

18. Total Income (millions)
What is the mean?
Total Income (millions)
$156
100 70 65 60 59 55 50 40
1,105
What is the sum of the numbers?
How many numbers are there? 16
What is the sum divided by the number of elements?
69.1