| 1 |
A quantitative variable whose value are countable is called. |
- A. Categorical variable
- B. Continuous variable
- C. Discrete variable
- D. None of these
|
| 2 |
If n is the number of elements of a set. the total numebr of subsects of this set in |
- A. 2n
- B. n2
- C. 2<sup>n</sup>
- D. n
|
| 3 |
If x is a random variable with E(x) = 5 then E(3x - 2) = |
- A. 0
- B. 1
- C. 13
- D. All of them
|
| 4 |
The consumer price index number is also called. |
- A. The cost of living index number
- B. The retail price index number
- C. The wholsale price index number
- D. Both a and b
|
| 5 |
Karl Pearson's 1<sup>st</sup> co-efficient of skewness is given by formula |
- A.
- B.
- C.
- D. None of these
|
| 6 |
The variance of binomial distribution is |
|
| 7 |
If x̅ = 10 and Y = 5 +2x, then Y̅ is. |
|
| 8 |
Freqeucny is denoted by |
|
| 9 |
If the random variable x denotes the number of heads when three distinct coins are tossed, the x assumes values |
- A. 0, 1, 2, 3
- B. 1, 3, 3, 1
- C. 1, 2, 3
- D. None of these
|
| 10 |
Colour of hair is a |
- A. Continuous variable
- B. Discrete variable
- C. Qualitative variable
- D. Quantitative variable
|
