| 1 |
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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| 2 |
Quartile Co-efficient of skewness is also called as |
- A. Median co-efficent of skewness
- B. Pearson's 1st co-efficient of skewness
- C. Pearson's 2nd co-efficient of skewness
- D. None of these
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| 3 |
Mean deviationis always. |
- A. More than S.D.
- B. Equal to S.D.
- C. Less than S.D.
- D. None of these
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| 4 |
The variance of 5,5,5,5,5 is. |
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| 5 |
First moment about mean is always equal to. |
- A. Standard deviation
- B. Zero
- C. 1
- D. Variance
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| 6 |
For symmetrical distributions the values of co-efficent of skewness is |
- A. Negative Number
- B. Positive Number
- C. Imaginary Number
- D. Pure Number
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| 7 |
For a moderately skewed dsitribution, whihc of the following emprical formula holds. |
- A. M.D. = 4/5(S.D)
- B. Q.D. = 2/3 (S.D)
- C. Q.D . = 5/6 (M.D.)
- D. All of these
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| 8 |
test2 |
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| 9 |
The most popular measure of dispersion in industry and meteorology is. |
- A. Range
- B. Quartile deviation
- C. Mean deviation
- D. Standard deviation
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| 10 |
The mean deviation is least if deviations are taken from |
- A. A.M
- B. Mode
- C. G.M
- D. Median
|