| 1 |
The unsystematic sequence which follows irregular pattern of variations is called: |
- A. Noise
- B. Signal
- C. Linear
- D. Non-linear
|
| 2 |
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
|
| 3 |
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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| 4 |
The graph of time series is called: |
- A. Histogram
- B. Historigram
- C. Straight line
- D. Ogive
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| 5 |
The straight line is fitted to a time series when the movements in the time series are |
- A. linear
- B. quadratic
- C. cubic
- D. constant
|
| 6 |
For a least squares linear trend Y = a + bX |
- A. ΣY = ΣY
- B. ΣY = 0
- C. ΣY > ΣY
- D. None of them
|
| 7 |
A business cycle has |
- A. one phase
- B. two phases
- C. three phases
- D. four phases
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| 8 |
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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| 9 |
The basic components of a time series are: |
|
| 10 |
The elimination or addition of a few more time periods may change its |
- A. speed
- B. value
- C. direction
- D. none of these
|