| 1 |
In the measurement of secular trend the moving averages: |
- A. Give the trend in a straight line
- B. Measure the seasonal variations
- C. Smooth out a time series
- D. None of these
|
| 2 |
In the measurement of secular trend the moving averages |
- A. give the trend in a straight line
- B. measure the seasonal variations
- C. smoothes out a time series
- D. measure irregular fluctuations
|
| 3 |
The multiplicative time series model is: |
- A. Y = T + S + C + I
- B. TSCI
- C. Y = a + bX
- D. Y = a + bX + cX<sup>2</sup>
|
| 4 |
The elimination or addition of a few more time periods may change its |
- A. speed
- B. value
- C. direction
- D. none of these
|
| 5 |
The trend values in freehand curve method are obtained by: |
- A. Equation of straight line
- B. Second degree parabola
- C. Signal
- D. Graph
|
| 6 |
ŷ=a+bx, this line will be called least squares line if it makes=Σ(y-a-bx)2 |
- A. maximum
- B. constant
- C. minimum
- D. variable
|
| 7 |
A business cycle has |
- A. one phase
- B. two phases
- C. three phases
- D. four phases
|
| 8 |
Which one is a rough and crude method for measuring secular trend ? |
- A. free hand curve method
- B. semi average method
- C. moving averages method
- D. least square method
|
| 9 |
For a least squares linear trend=ŷ= a + b x, |
- A. Σy <Σŷ
- B. Σŷ = 0
- C. Σy =Σŷ
- D. none of these
|
| 10 |
Increase the number of patients in the hospital due to heel stock is: |
- A. Seasonal trend
- B. Secular trend
- C. Cyclical movements
- D. Irregular variation
|