| 1 |
Karl Pearson's 1<sup>st</sup> co-efficient of skewness is given by formula |
- A.
- B.
- C.
- D. None of these
|
| 2 |
In a symmetrical distribution the coefficient of skewness is equal to. |
- A. -1
- B. +1
- C. 0
- D. None of these
|
| 3 |
Moment ratios b1 and are. |
- A. Expressed in original unit of the data
- B. Dimensionless quantities
- C. Independent of origin and scale of messurement
- D. Both b and c
|
| 4 |
If Mean = 25 and S<sup>2</sup> =25 the C.V is |
- A. 100%
- B. 25%
- C. 20%
- D. None of these
|
| 5 |
The sum of absolute deviations is a minimum if these deviations are taken from the |
- A. Mean
- B. Mode
- C. Median
- D. All of these
|
| 6 |
First moment about mean is always equal to |
- A. One
- B. Negative
- C. Zero
- D. Positive
|
| 7 |
The difference between largest and smallest observation is called |
- A. Interval
- B. Class interval
- C. Range
- D. Difference
|
| 8 |
If the value of a variable are -2, -3, -5, -10 then range is. |
|
| 9 |
Which measure of disperesion is considered as the best genereal purpose measure of dispersion. |
- A. Range
- B. Semi interquartile range
- C. Standard deviation
- D. Mean deviation
|
| 10 |
Lack of symmetry is called |
- A. Kurtosis
- B. Skewness
- C. Normality
- D. All of them
|