πStatistics MCQs
Statistics MCQs
490 MCQs81
For t distribution, increasing the sample size, the affect will be on ?
AStandard Error of the Means
BThe t-ratio
CDegrees of Freedom
DAll Above
82
A quantity obtained by applying certain rule or formula is known as ________________?
AEstimate
BTest Statistics
CEstimation
DSample E. Estimator
83
Analysis of Variance (ANOVA) is a test for equally of______________?
AVariances
BProportions
COnly two parameters
DMeans
84
If we reject the null hypothesis, we might be making____________?
AUnpredictable
BA correct Decision
CType-II Error
DType-Error
85
Parameter is a _________ quantity?
AConstant
BVariable
CAll of above
DNon of these
86
1 β Ξ± is the probability of_____________?
AAcceptance Region
BType-I error
CType-II Error
DRejection Region
87
A set of jointly sufficient statistic is defined to be minimal sufficient if and only if_______________?
AIt is a function of some other set of sufficient statistics.
BIt is a function of every other set of sufficient
CIt is a function of any sufficient statistics in the set.
DIt is not a function of every other set of sufficient statistics.
88
For a biased estimator ΞΈΛ of ΞΈ, which one is correct_______________?
AMSE(ΞΈΛ)=SD(ΞΈΛ)+Bias
BMSE(ΞΈΛ)=Var(ΞΈΛ)+Bias2
CMSE(ΞΈΛ)=SD(ΞΈΛ)+Bias2
DMSE(ΞΈΛ)=Var(ΞΈΛ)+Bias
89
Let X1,X2,β¦β¦,Xn be a random sample from a density,,,, f(x ΞΉ ΞΈ) where ΞΈ is a value of the random variable Ξwith known density gΞ(ΞΈ) Then the estimator β(ΞΈ) withβ¦/ respect to the prior gΞ(ΞΈ) is define as______________E[β(ΞΈ)ΞΉX1,X2,β¦..,Xn] is called?
APosterior Bayβs estimator
BMinimax estimator
CBayβs estimator
DSufficient estimator
90
The non parametric equivalent of an unpaired samples t-test____________?
AKruskal Wallis Test
BMann-Whitney U test
CWilcoxon signed rank test
DSign test