| 1 |
The variance of constant is always |
- A. Constant
- B. One
- C. Positive
- D. Zero
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| 2 |
The range of the scores 19,3,140,25,95,is |
- A. 140
- B. 137
- C. 143
- D. 3
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| 3 |
A disadvantage of range is that it is based on. |
- A. Absolute deviation
- B. Square deviation
- C. Two extreme observation
- D. Upper and quartile
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| 4 |
If the third moment about mean is zero ( m3 = 0) , then the distribution is. |
- A. Mesokurtic
- B. Positively skewed
- C. Symmetrical
- D. Negatively skewed
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| 5 |
In a symmetrical distribution, the coefficient of skewness will always be. |
- A. Negative
- B. zero
- C. 1
- D. -1
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| 6 |
If Mean = 25 and S<sup>2</sup> =25 the C.V is |
- A. 100%
- B. 25%
- C. 20%
- D. None of these
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| 7 |
Standard deviation is always calculate form: |
- A. Mean
- B. Median
- C. Mode
- D. All of the above
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| 8 |
Mean deviation = S.D |
- A. 2/3
- B. 4/5
- C. 5/6
- D. 6/5
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| 9 |
test2 |
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| 10 |
In a symmetrical distribution the coefficient of skewness is equal to. |
- A. -1
- B. +1
- C. 0
- D. None of these
|