| 1 |
r<sub>xy</sub> -------------- r<sub>yx</sub> |
- A. =
- B. <
- C. >
- D. ≠
|
| 2 |
A data points falling along a straight line is called______. |
- A. Linear relationship
- B. Non-linear relationship
- C. Linear positive
- D. Scatter diagram
|
| 3 |
The estimates of the parameters=α and=β are |
- A. μ and=σ2
- B. a and b
- C. μ andπ
- D. χ2 and Z
|
| 4 |
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
|
| 5 |
The straight line graph of the linear equation Y = a + bX, the slope will be upward it_______. |
- A. b = 0
- B. b < 0
- C. b > 0
- D. b ≠ 0
|
| 6 |
Regression line x on y is |
|
| 7 |
A set of points in a rectangular coordinate system, where each point represents an observed pair of values is called |
- A. least square regression
- B. scatter diagram
- C. pie graph
- D. regression coefficient
|
| 8 |
|
- A. S<sub>xy</sub>
- B. S<sub>yx</sub>
- C. b<sub>xy</sub>
- D. b<sub>yx</sub>
|
| 9 |
|
- A. y-intercept
- B. x-intercept
- C. slope
- D. none of these
|
| 10 |
If r = -1, then there is |
- A. negative correlation
- B. perfect negative correlation
- C. no correlation
- D. average correlation
|
