| Value of Correlation Coefficient (r) | Description |
| 1. r = 0 | A. two variables are uncorrelated |
| 2. r = -1 | B. the correlation is perfect |
| 3. high value of r | C. strong linear relationship |
| 4. low value of r | D. weak linear relation |
Answer & explanation
Correct answer: option 3
The correct answer is Option 3:
| Value of Correlation Coefficient (r) | Description |
| 1. r = 0 | A. two variables are uncorrelated |
| 2. r = -1 | B. the correlation is perfect |
| 3. high value of r | C. strong linear relationship |
| 4. low value of r | D. weak linear relation |
If r = 0 the two variables are uncorrelated. There is no linear relation between them.
• If r = 1 or r = –1 the correlation is perfect and there is exact linear relation.
• A high value of r indicates strong linear relationship. Its value is said to be high when it is close to +1 or –1.
• A low value of r (close to zero) indicates a weak linear relation. But there may be a non-linear relation.