Variance remains unchanged by change of________________?

Related Mcqs:

1. Variance remains unchanged by change of_____________?

   A. Origin
   B. Scale
   C. Both
   D. None of these

2. The variance of 5 numbers is 10. If each number is divided by 2, then the variance of new numbers is______________?

   A. 20
   B. 5
   C. 2.5
   D. 5.5
   E. 0

3. Suppose for 40 observations, the variance is 50. If all the observations are increased by 20, the variance of these increased observation will be______________?

   A. 50
   B. 70
   C. 50/20
   D. 50-20 = 30
   E. 50

4. Sample variance S2 is unbiased estimator of population variance 26 because ________________?

   A. E(S2) = s2
   B. E(u) = X
   C. E(P) = P
   D. Ux = u

5. suppose for 40 observation, the variance is 50. If all the observation are increased by 20, the variance of these increased observation will be_________?

   A. 50
   B. 70
   C. 50/20
   D. 50-20=30

6. The variance of 5 numbers is 10. If each number is divided by 2, then variance of new number is_____________?

   A. 20
   B. 5
   C. 2.5
   D. 0

7. In binomial distribution the probability of success remains __________ from trial to trial?

   A. Constant
   B. Varies
   C. Four
   D. Probability

8. The height of a student is 60 inches. This is an example of________________?

   A. Qualitative data
   B. Categorical data
   C. Continuous data
   D. Discrete data

9. If the standard deviation of a population is 9, the population variance is_____________?

   A. 9
   B. 3
   C. 21
   D. 81

10. The variance of a constant is_______________?

    A. Zero
    B. Constant
    C. a
    D. None