For the following set of scores: Original Data X Y 4 5 6 5 3 2 9 4 6 5 2 3 ∑X ∑Y SSXX SSYY ∑XY SP r Add 2 points to each X value: 2 Added to Each X X Y 6 5 8 5 5 2 11 4 8 5 4 3 Compute the correlation for the modified scores using two decimal places. ∑X ∑Y SSXX SSYY ∑XY SP r How does adding a constant to every score affect the value of the correlation? The correlation changes sign. The correlation does not change. The correlation increases. The correlation decreases.
For the following set of scores: Original Data X Y 4 5 6 5 3 2 9 4 6 5 2 3 ∑X ∑Y SSXX SSYY ∑XY SP r Add 2 points to each X value: 2 Added to Each X X Y 6 5 8 5 5 2 11 4 8 5 4 3 Compute the correlation for the modified scores using two decimal places. ∑X ∑Y SSXX SSYY ∑XY SP r How does adding a constant to every score affect the value of the correlation? The correlation changes sign. The correlation does not change. The correlation increases. The correlation decreases.
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter4: Equations Of Linear Functions
Section4.5: Correlation And Causation
Problem 24PFA
Related questions
Question
For the following set of scores:
Original Data
X
|
Y
|
---|---|
4 | 5 |
6 | 5 |
3 | 2 |
9 | 4 |
6 | 5 |
2 | 3 |
∑X
|
∑Y
|
SSXX
|
SSYY
|
∑XY
|
SP
|
r
|
---|---|---|---|---|---|---|
|
|
|
|
|
|
|
Add 2 points to each X value:
2 Added to Each X
X
|
Y
|
---|---|
6 | 5 |
8 | 5 |
5 | 2 |
11 | 4 |
8 | 5 |
4 | 3 |
Compute the correlation for the modified scores using two decimal places.
∑X
|
∑Y
|
SSXX
|
SSYY
|
∑XY
|
SP
|
r
|
---|---|---|---|---|---|---|
|
|
|
|
|
|
|
How does adding a constant to every score affect the value of the correlation?
The correlation changes sign.
The correlation does not change.
The correlation increases.
The correlation decreases.
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