Correlation Examples

Get ready to guess!

Teachers: click on View, Notes Page for information about each slide

Guessing correlation for REAL data

You will be presented with the data. Guess if it is linear or not. Guess if it has positive correlation, negative

correlation that is strong, moderate, or weak, or no correlation.

View the plot. See if you were right!

Alcohol consumption vs. Tobacco for regions in Great Britain

Alcohol consumption vs. Tobaccofor regions in Great Britain

Ignore Ireland: positive, moderate/strong

Ireland

Birthday vs. Draft Lottery Number

none

Birthday vs. Draft Lottery Number

Surprise! There is a little.

Hours of TV watched vs. Grades

Hours of TV

Tes

t S

core

s

10 12 14 16 18 20 22 24 26 28 30 3250

60

70

80

90

100

Hours of TV watched vs. Grades

Negative and moderate/strong

Boy’s Age vs. Height

Positive and strong

4 5 6 7 8 9 10 11 12 13 14 15 1640

42

44

46

48

50

52

54

56

58

60

62

64

66

68

70Boys growth ages 5-15

Age

Hei

gh

t (i

n)

Shoe size and IQ score

none

Sho

e si

ze

IQ Score

Smoking vs. Lung Cancer

Smoking vs. Lung Cancer

Positive and moderate/strong

Brain size vs. intelligenceMen = red Women = blue

Brain size vs. intelligenceMen = red Women = blue

Men: positive & weak Women:none

Changes in Birthrates from 1920-1970

Changes in Birthrates from 1920-1970

It isn’t linear!

Baby

boom

er y

ears

Peanut Butter Quality vs. Price

Positive and weak

10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 904

6

8

10

12

14

16

18

20

22

24

26

28

30

32

34

Price

Qu

alit

y

Niceness vs. Behavior issues

Niceness vs. Behavior issues

Negative and moderate

2.2 2.4 2.6 2.8 3 3.2 3.4 3.6 3.8 4 4.2 4.4 4.6 4.8

5

10

15

20

25

30

35

0x

Niceness Rating

Beh

avio

r P

rob

lem

s