| 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 |
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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| 3 |
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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| 4 |
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
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| 5 |
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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| 6 |
The equation of the quadratic (parabolic) trend is |
- A. ŷ=a+bx
- B. ŷ=a+by
- C. ŷ=a+bΣx+cΣx<sup>2</sup>
- D. ŷ=a+bx+cx<sup>2</sup>
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| 7 |
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
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| 8 |
For a least squares linear trend=ŷ = a + bx, b is the |
- A. variable
- B. intercept
- C. trend
- D. slope
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| 9 |
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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| 10 |
The graph of time series is called: |
- A. Histogram
- B. Historigram
- C. Straight line
- D. Ogive
|