| 1 |
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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| 2 |
The graph of a time series is called |
- A. histogram
- B. polygon
- C. straight line
- D. historigram
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| 3 |
The systematic components of time series which follow regular pattern of variations are called: |
- A. Noise
- B. Signal
- C. Additive model
- D. Multiplicative model
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| 4 |
The unsystematic sequence which follows irregular pattern of variations is called: |
- A. Noise
- B. Signal
- C. Linear
- D. Non-linear
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| 5 |
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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| 6 |
In time series seasonal variations can occur within a period of: |
- A. Nine years
- B. Four Years
- C. Three years
- D. One year
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| 7 |
The graph of time series is called: |
- A. Histogram
- B. Historigram
- C. Straight line
- D. Ogive
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| 8 |
For a least squares linear trend=ŷ= a + b x, |
- A. Σy <Σŷ
- B. Σŷ = 0
- C. Σy =Σŷ
- D. none of these
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| 9 |
In a straight line equation Y = a + bX; a is the: |
- A. X - intercept
- B. Slope
- C. Y- intercept
- D. None of them
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| 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
|