| 1 |
For a constant K ,the variance of K. |
- A. Zero
- B. A<sup>-2</sup>
- C. K
- D. None of these
|
| 2 |
The result of no interest of an experiment is called. |
- A. Contstant
- B. even
- C. Failure
- D. Success
|
| 3 |
a measure of the chance that an uncertain event will occur. |
- A. An experiment
- B. An event
- C. A probability
- D. A trail
|
| 4 |
For a constant k, the variance of k is |
- A. zero
- B. k<sup>2</sup>
- C. k
- D. none of these
|
| 5 |
For two independent random variables, Var(x) = 14 and Var(Y ) = 5, then var (X-y) is equal to. |
- A. 9
- B. 70
- C. 19
- D. None of these
|
| 6 |
Hourly temperature recorded by weather brave is the example of: |
- A. Discrete variable
- B. Continuous variable
- C. Qualitative
- D. Both A and B
|
| 7 |
The range of probability is between |
- A. 0 to 2
- B. -1 to +1
- C. 0 to 8
- D. 0 to 1
|
| 8 |
Coefficient of variation (C.V) is given below |
- A. Mean /S.D x10
- B. Mean/S.D x 100
- C. S.D/Mean x 100
- D. S.D/ Mean
|
| 9 |
When two coins are tossed simultaneously, P (one head ) is. |
- A. 1/2
- B. 1/4
- C. 3/4
- D. 1.0
|
| 10 |
If x and y are independent random variables, then E(xy) |
- A. E(xy)
- B. xE(y)
- C. E(x)
- D. E(x)E(y)
|
