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

Related Mcqs:

1. 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

2. 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

3. 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

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. The ________ in the distribution around which the observation to lie?

   A. Mean
   B. Dispersion
   C. Manner
   D. Central value

6. If the smallest observation in a data is decreased, the average which is not affected is______________?

   A. G.M.
   B. Median
   C. Mean
   D. Harmonic mean

7. Let Z1,Z2,….Zn be independent and identically distributedrandom variable, satisfying E[ι Zt ι]<∞. Let N be an integer valued random variable whose value n depends only on the values of the first n Z¡'s. Suppose E(N)< ∞, then E(Z1,Z2,….Zn)=E(N)E(Z) is called ?

   A. Independence Equation
   B. Sequential Probability Likelihood Equation
   C. Neyman Pearson Lemma
   D. Wald’s Equation

8. The S.D. and variance are ____ of origine?

   A. Multiplied
   B. Variance
   C. Change
   D. Independent

9. Lowest value of variance can be____________?

   A. 1
   B. -1
   C. 3
   D. 0

10. Mean deviation, Variance and Standard Deviation of the values 4,4,4,4,4,4 is_______________?

    A. 4
    B. 8
    C. 2
    D. 0