More Practice Problems: Correlation

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

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Day 5: Correlation
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Quiz 5
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