| |
| |
1. |
What is implied when it is said that x and y have a negative correlation? |
| |
|
A. |
When the value of x increases, the value of y increases. |
| |
|
B. |
When the value of x increases, the value of y does not necessarily increase or decrease. |
| |
|
C. |
When the value of x is negative, the value of y negative. |
| |
|
D. |
When the value of x increases, the value of y decreases. |
| |
|
Hint |
|
| |
2. |
A line of best-fit should not be drawn for which of the following graphs. |
| |
|
A. |
 |
B. |
 |
| |
|
C. |
 |
D. |
 |
| |
|
Hint |
|
| |
3. |
Which scatter plot shows that x and y have a positive correlation? |
| |
|
A. |
 |
B. |
 |
| |
|
C. |
 |
D. |
 |
| |
|
Hint |
|
| |
4. |
What is implied when it is said that x and y have a positive correlation? |
| |
|
A. |
When the value of x increases, the value of y decreases. |
| |
|
B. |
When the value of x decreases, the value of y does not necessarily increase or decrease. |
| |
|
C. |
When the value of x increases, the value of y increases. |
| |
|
D. |
When the value of x increases, the value of y does not necessarily increase or decrease. |
| |
|
Hint |
|
| |
5. |
What is implied when it is said that x and y have no correlation? |
| |
|
A. |
When the value of x decreases, the value of y decreases. |
| |
|
B. |
When the value of x increases, the value of y increases. |
| |
|
C. |
When the value of x increases, the value of y does not necessarily increase or decrease. |
| |
|
D. |
When the value of x increases, the value of y decreases. |
| |
|
Hint |
|
|
|