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

Related Mcqs:

1. An estimator Q is an unbiased estimator of the population parameter Q if ___________________?

   A. E(x) = µ
   B. E(Q) =Q
   C. E(Q) =Q
   D. E(P) = P

2. The minimum variance unbiased estimator of the population mean is _______________?

   A. 6/√n
   B. S/√n
   C. S2/n
   D. 6x/√n

3. Since E(X) _______X is said to be unbiased estimator of the population mean?

   A. Q
   B. X
   C. Ux
   D. u

4. Let X1,X2,……,Xn be a random sample from a density,,,, f(x ι θ) where θ is a value of the random variable Θwith known density gΘ(θ) Then the estimator ∏(θ) with…/ respect to the prior gΘ(θ) is define as_________________E[∏(θ)ιX1,X2,…..,Xn] is called?

   A. Posterior Bay’s estimator
   B. Minimax estimator
   C. Bay’s estimator
   D. Sufficient estimator

5. Sample proportion P is __________ estimator?

   A. Biased
   B. Parameter
   C. Unbiased
   D. None of these

6. Let X1,X2,……,Xn be a random sample from a density,,,, f(x ι θ) where θ is a value of the random variable Θwith known density gΘ(θ) Then the estimator ∏(θ) with…/ respect to the prior gΘ(θ) is define as______________E[∏(θ)ιX1,X2,…..,Xn] is called?

   A. Posterior Bay’s estimator
   B. Minimax estimator
   C. Bay’s estimator
   D. Sufficient estimator

7. A list of sample _________ is called sample space?

   A. Events
   B. Subset
   C. Piont
   D. Distinct

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

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

9. Criteria to check a point estimator to be good are_____________?

   A. Consistency
   B. All Above
   C. Unbiasedness
   D. Efficiency

10. x=40 is estimator of _________________?

    A. (U)
    B. 6
    C. Ux
    D. 6/√n