| 1 |
The additive model of the time series is: |
- A. Y = T + S + C + I
- B. TSCI
- C. Y = a + bX
- D. Y = a + bX + cX<sup>2</sup>
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| 2 |
A business cycle has |
- A. one phase
- B. two phases
- C. three phases
- D. four phases
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| 3 |
The rise and fall of a time series periods longer than one- year is called. |
- A. Secular trend
- B. Seasonal variation
- C. Cyclical variation
- D. Irregular variation
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| 4 |
For a least squares linear trend ŷ = a + bx, the Σ(y-ŷ)<sup>2</sup> = 0 when |
- A. all the y-values lie on the line
- B. all the y-values are positive
- C. all the y-+values lie above the line
- D. none of these
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| 5 |
For a least squares linear trend Y = a + bX |
- A. ΣY = ΣY
- B. ΣY = 0
- C. ΣY > ΣY
- D. None of them
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| 6 |
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
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| 7 |
For a least squares linear trend Y = a + bx, the Σ(Y - Y)<sup>2</sup> = 0 when: |
- A. All the Y-values are positive
- B. All the Y-values lie on the line
- C. All the Y-values lie above the line
- D. None of these
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| 8 |
The secular trend is measured by the method of semi-averages when |
- A. time series contains yearly values
- B. trend is linear
- C. time series contains odd number of values
- D. none of these
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| 9 |
For a least squares line trend Y = a + bx, the b is the: |
- A. Intercept
- B. Slope
- C. Variable
- D. Trend
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| 10 |
Methods of semi-averages gives an |
- A. accurate result
- B. objective result
- C. authentic result
- D. none of these
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