Multiply each of the original X values by 2: Each X Multiplied by 2 X Y 8 5 12 5 6 2 18 4 12 5 4 3 Compute the correlation for the modified scores using two decimal places. ∑X ∑Y SSXX SSYY ∑XY SP r How does multiplying each score by a (positive) constant affect the value of the correlation? The correlation increases. The correlation decreases. The correlation changes sign. The correlation does not change.
Multiply each of the original X values by 2: Each X Multiplied by 2 X Y 8 5 12 5 6 2 18 4 12 5 4 3 Compute the correlation for the modified scores using two decimal places. ∑X ∑Y SSXX SSYY ∑XY SP r How does multiplying each score by a (positive) constant affect the value of the correlation? The correlation increases. The correlation decreases. The correlation changes sign. The correlation does not change.
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 2AGP
Related questions
Question
Multiply each of the original X values by 2:
Each X Multiplied by 2
|
X
|
Y
|
|---|---|
| 8 | 5 |
| 12 | 5 |
| 6 | 2 |
| 18 | 4 |
| 12 | 5 |
| 4 | 3 |
Compute the correlation for the modified scores using two decimal places.
|
∑X
|
∑Y
|
SSXX
|
SSYY
|
∑XY
|
SP
|
r
|
|---|---|---|---|---|---|---|
|
|
|
|
|
|
|
|
How does multiplying each score by a (positive) constant affect the value of the correlation?
The correlation increases.
The correlation decreases.
The correlation changes sign.
The correlation does not change.
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