| 1 |
For a least squares linear trend=ŷ = a + bx, b is the |
- A. variable
- B. intercept
- C. trend
- D. slope
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| 2 |
The unsystematic sequence which follows irregular pattern of variations is called: |
- A. Noise
- B. Signal
- C. Linear
- D. Non-linear
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| 3 |
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
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| 4 |
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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| 5 |
The trend values in freehand curve method are obtained by: |
- A. Equation of straight line
- B. Second degree parabola
- C. Signal
- D. Graph
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| 6 |
The sum of deviations=Σ(y-ŷ) = |
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| 7 |
The basic components of a time series are: |
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| 8 |
The secular trend is measured by the method of semi-averages when: |
- A. Time series contains yearly value
- B. Trend is linear
- C. Time series contains odd number of values
- D. None of them
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| 9 |
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>
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| 10 |
The elimination or addition of a few more time periods may change its |
- A. speed
- B. value
- C. direction
- D. none of these
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