📈Statistics MCQs
Statistics MCQs
490 MCQs141
Sample proportion P is __________ estimator?
ABiased
BParameter
CUnbiased
DNone of these
142
An estimator Q is an unbiased estimator of the population parameter Q if ___________________?
AE(x) = µ
BE(Q) =Q
CE(Q) =Q
DE(P) = P
143
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?
APosterior Bay’s estimator
BMinimax estimator
CBay’s estimator
DSufficient estimator
144
If E(θˆ)=θ, then θˆ is said to be_______________?
AUnbiased
BConsistent
CSufficient
DEfficient
145
if Var(T2)_______________?
AEfficient
BSufficient
CUnbiased
DConsistent
146
for two estimators T1=t1(X1,X2,….Xn) and T1=t1(X1,X2,….Xn) then estimators t1 is defined to be Rt1(θ)≤Rt2(θ) for all θ in Θ ?
AConsistent estimator
BAdmissible estimator
CSufficient estimator
DMinimax estimator
147
E(x1 – x2)= ___________________?
Aux – x2
Bu1 – u2
C6x – x2
D6×2 – x2
148
95% confidence limits u are ________________?
Ax±1.65 6/√n
Bu±1.95 S/√n
Cx±1.96 6/√n
D±1.96 6/√n
149
The minimum variance unbiased estimator of the population mean is _______________?
A6/√n
BS/√n
CS2/n
D6x/√n
150
__________ is the process of using sample information to reach?
APopulation
BBiased
CUnbiased
DIncrease