More Practice Problems: Correlation

November 5, 2008 by  
Filed under Correlation, Practice Problems

Item 5

How much variance is NOT accounted for between these two variables:

Strength Anxiety
2                     3
9                     7
3                     4
1                     1
7                   12

SSx =     _____
SSy =     _____
SSxy =   _____
r =         _____
r2 =        _____
1 – r2 = _____

Item 6

Is there a significant relationship between the number of petals on a flower and how much the elephant plant weighs:

Petals Weight
18                     1
15                     7
8                   11
6                     6
4                   18
2                   22

SSx =     _____
SSy =     _____
SSxy =   _____
r =         _____
r2 =        _____

Item 7

What percent of variance do love and peace have in common:

Love Peace
12                     1
22                     3
8                     0
19                     1
2                   11
9                     4

7                     5

SSx =     _____
SSy =     _____
SSxy =   _____
r =         _____
r2 =        _____

 

Answers

 

NOW YOU CHOOSE:
Day 5: Correlation
Bit More About Correlation
Even More About Correlation
Calculate Correlation
Practice Problems
More Practice Problems
Word Problems
Sim1 Sim2 Sim3
Sim4 Sim5 Sim6
Sim7 Sim8 Sim9
Basic Facts About Correlation
Vocabulary
Formulas
Quiz 5
Summary

Practice Problems: Correlation

November 3, 2008 by  
Filed under Correlation, Practice Problems

Item 1

What is the correlation between these two variables:
Stress                Sense of Humor
4                             2
10                             8
12                           11
5                             3
7                             8
6                             7
2                             3
14                           13
SSx = _____
SSy = _____
SSxy = _____
r = _____

 

Item 2

What is the correlation between these two variables:
Laughter                      Statistics
11                              19
3                                6
5                                6
15                              12
7                                8
6                                7
9                              14

SSx = _____
SSy = _____
SSxy = _____
r = _____

 

Item 3

How much variance is accounted for between these two variables:

Strength                   Speed
12                           3
9                           7
6                           9
3                         11
1                         15
7                           6

SSx = _____
SSy = _____
SSxy = _____
r = _____
rsquared = _____

 

Item 4

What is the correlation between these two variables:

Strength                Peace
2                         2
6                         5
7                         8
14                       19
15                       12
9                         8
4                         5

SSx = _____
SSy = _____
SSxy = _____
r = _____
rsquared = _____

 

Answers

 

NOW YOU CHOOSE:
Day 5: Correlation
Bit More About Correlation
Even More About Correlation
Calculate Correlation
Practice Problems
More Practice Problems
Word Problems
Sim1 Sim2 Sim3
Sim4 Sim5 Sim6
Sim7 Sim8 Sim9
Basic Facts About Correlation
Vocabulary
Formulas
Quiz 5
Summary