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Statistics MCQs with Explanations

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491StatisticsMedium

In a binomial distribution the probability of ________ changes from trial to trial?

ASuccess

BFailure

COut come

DExperiment

Correct answer

A. Success

Explanation

The correct answer is Success.

492StatisticsMedium

If any value in the data is zero, then it is not possible to have ________?

AA.M.

BH.M.

CMedain

DMode

Correct answer

B. H.M.

Explanation

The correct answer is H.M..

493StatisticsMedium

The correct variance is define as the ________?

AS.D. of data h2/12

Bvaries of data P2/6

CM.D. of data h2/6

DVariance of data h2/12

Correct answer

D. Variance of data h2/12

Explanation

The correct answer is Variance of data h2/12.

494StatisticsMedium

For discrete random ‘X’, the expectation of X i.e., E(x) is equal to:________?

A∑x.P(x)

B∑x 2 P(x)

COne

D∑P(x)

Correct answer

A. ∑x.P(x)

Explanation

The correct answer is ∑x.P(x).

495StatisticsMedium

Variance is always calculated from________?

AMode

BMedian

CMean

DGeometric Mean

EVariance

Correct answer

C. Mean

Explanation

The correct answer is Mean.

496StatisticsMedium

Median is ________ than mean is a positive skewed distribution?

AGreat

Blesser

CNone of these

DEqual

Correct answer

B. lesser

Explanation

The correct answer is lesser.

497StatisticsMedium

When the assumption of normality not met we go for________?

ANon parametric tests

BEither both

CNone of these

DParametric test

Correct answer

A. Non parametric tests

Explanation

The correct answer is Non parametric tests.

498StatisticsMedium

A test is said to be most powerful test of size α, if________?

AAmong all other test of size α or greater it has the largest β

BAmong all other test of size α or greater it has the smallest power

CAmong all other test of size α or less it has the largest power

DAmong all other test of size α or greater it has the largest 1 – α

Correct answer

C. Among all other test of size α or less it has the largest power

Explanation

The correct answer is Among all other test of size α or less it has the largest power.

499StatisticsMedium

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

AManner

BDispersion

CCentral value

DMean

Correct answer

A. Manner

Explanation

The correct answer is Manner.

500StatisticsMedium

If Y=-8X – 5 and SD of X is 3, then SD of Y is________?

C24

DNone of these

Correct answer

C. 24

Explanation

The correct answer is 24.

A test is said to be most powerful test of size α, if________?

AAmong all other test of size α or greater it has the largest β

BAmong all other test of size α or greater it has the smallest power

CAmong all other test of size α or less it has the largest power

DAmong all other test of size α or greater it has the largest 1 – α

Correct answer

C. Among all other test of size α or less it has the largest power

Explanation

The correct answer is Among all other test of size α or less it has the largest power.