| 1 |
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
|
| 2 |
In a straight line equation Y = a + bX; a is the: |
- A. X - intercept
- B. Slope
- C. Y- intercept
- D. None of them
|
| 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
|
| 4 |
Methods of semi-averages gives an |
- A. accurate result
- B. objective result
- C. authentic result
- D. none of these
|
| 5 |
Sum of squares of residuals is denoted by |
- A. ∑<i>e</i>
- B. ∑<i>e</i><sup>2</sup>
- C. ∑<i>e</i><sup>3</sup>
- D. <span style="font-size: 14.399999618530273px;">∑</span><i style="font-size: 14.399999618530273px;">e</i><sup>4</sup>
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| 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 |
For a least squares linear trend=ŷ= a + b x, |
- A. Σy <Σŷ
- B. Σŷ = 0
- C. Σy =Σŷ
- D. none of these
|
| 9 |
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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| 10 |
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
|