A-5 Correlation

1. The range of Co-efficient of Correlation is-----

• -1 to 0
• 0 to 1
• -1 to 1
• None of the above

2. When the two variable vary in the opposite direction it is called-------

• Negative Correlation
• Positive Correlation
• Both Negative & Positive Correlation
• None of the above

3. In correlation both variables are always-----

• Ramdom
• Non-Random
• Same
• None of the above

4. A perfectly negative correlation is signified by-----

• 0
• 1
• 0.5
• -1

5. A co-efficient of correlation is computed to be -0.95 means that----

• The relationship between two variables is weak
• The relationship between two variables is strong and but negative
• The relationship between two variables is strong and positive
• None of the above

6. A perfect negative correlation is signified by-----

• 0
• 1
• 0.5
• -1

7. When the two variables vary in the same direction it is called------

• Negative Correlation
• Positive Correlation
• Both Negative and Positive Correlation
• None of the above

8. The range of Low Degree Positive Correlation lies between----

• 0.01 to 0.30
• 0.1 to 0.25
• 1.0 to 3.0
• 0.31 to 0.75

9. If r=0.98, n=10 then P.E. will be------

• 0.008
• 0.800
• 8.000
• None of the above

10. If r=0.99, n=11 then P.E. will be------

• 0.004
• 0.400
• 4.000
• None of the above