| 1 |
Mean deviationis always. |
- A. More than S.D.
- B. Equal to S.D.
- C. Less than S.D.
- D. None of these
|
| 2 |
In the grouped data , the range is the difference between. |
- A. Two extreme class frequency
- B. Two extreme class limits
- C. Tow extreme class boundaries
- D. None of these
|
| 3 |
Second moment about mean is called |
- A. Standard deviation
- B. Mean deviation
- C. Variance
- D. Coefficient of variation
|
| 4 |
If b<sub>2</sub> = 3, then the distribution is: |
- A. leptokurtic
- B. Platykurtic
- C. Normal
- D. None of these
|
| 5 |
The distribution is measokurtic if the moment coefficient of of kurtosis b2 is. |
- A. Equal to 0
- B. Equal to 3
- C. Less than 3
- D. Greater than zero
|
| 6 |
In measure of relative dispersion unit of measurement is. |
- A. Changed
- B. Vanishes
- C. Does not vanishes
- D. None of these
|
| 7 |
Karl Pearson's 1<sup>st</sup> co-efficient of skewness is given by formula |
- A.
- B.
- C.
- D. None of these
|
| 8 |
The value of standard deviation changes by change of. |
- A. Origin
- B. Algebraic sign
- C. Scale
- D. None
|
| 9 |
The lack of symmetry is called________. |
- A. consistent
- B. skewness
- C. Equidistant
- D. Kurtosis
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| 10 |
If the value of a variable are -2, -3, -5, -10 then range is. |
|