| 1 |
If the value of any regression coefficient is zero, then two variable are _______. |
- A. Qualitative
- B. Correlation
- C. Dependent
- D. Independent
|
| 2 |
When b<sub>xy</sub> is positive, then b<sub>yx</sub> will be _______. |
- A. Negative
- B. Positive
- C. Zero
- D. One
|
| 3 |
The _______ regression line always passes through (X̅, y̅). |
- A. Opposite
- B. Estimated
- C. Estimates
- D. Random
|
| 4 |
The estimates of the parameters=α and=β are |
- A. μ and=σ2
- B. a and b
- C. μ andπ
- D. χ2 and Z
|
| 5 |
A data points falling along a straight line is called______. |
- A. Linear relationship
- B. Non-linear relationship
- C. Linear positive
- D. Scatter diagram
|
| 6 |
The measures of strength of closeness of linear relationship between two variables is called |
- A. simple linear regression
- B. composite linear regression
- C. simple linear correlation
- D. composite linear correlation
|
| 7 |
If X and Y are independent, then Cov(x,y) = 0 which implies that |
- A. b<sub>yx</sub> = 0
- B. b<sub>xy</sub> = 0
- C. ρ = 0
- D. a = 0
|
| 8 |
A relationship where the flow of the data points is best represented by a curve is called_______. |
- A. Linear positive
- B. Linear negative
- C. Linear relationship
- D. Nonlinear relatiobship
|
| 9 |
The value of the coefficient of correlation relies between__________. |
- A. -1 and +1
- B. 0 and 1
- C. -1 and 0
- D. -0.5 and + 0.5
|
| 10 |
|
- A. 37
- B. 132
- C. 32
- D. cannot be calculated
|
