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Statistics MCQs with Explanations

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251StatisticsMedium

Sample proportion P is ________ estimator?

AParameter

BUnbiased

CBiased

DNone of these

Correct answer

B. Unbiased

Explanation

The correct answer is Unbiased.

252StatisticsMedium

Which hypothesis tell us weather test is one tail or 2 tail?

Asimple hypothesis

BNone of these

Cnull hypothesis

Dall of the above

Correct answer

C. null hypothesis

Explanation

The correct answer is null hypothesis.

253StatisticsMedium

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

AChange

BVariance

CMultiplied

DIndependent

Correct answer

D. Independent

Explanation

The correct answer is Independent.

254StatisticsMedium

P95 means ________?

AThe central 95% area

BBoth (a) and (b) but not (c)

CThe point above below which 95% area lies

DThe point above above which95% area lies

Correct answer

C. The point above below which 95% area lies

Explanation

The correct answer is The point above below which 95% area lies.

255StatisticsMedium

Addition Law of probability for mutually exclusive event is equal ________?

AP(A∩B) = P(A) + P(B) + P(A∩B)

BP(AUB)=P(A) + (B)

CP(AUB) = P(A) + P(B) – P(A∩B)

DP(A∩B) = P(A). P(B

Correct answer

B. P(AUB)=P(A) + (B)

Explanation

The correct answer is P(AUB)=P(A) + (B).

256StatisticsMedium

Let X1,X2,...Xn be a random sample from the density f(x;(θ), where θ may be vector. If the conditional distribution of X1,X2,...Xn given S=s does not depend on θ for any value of s of S, then statistic is called?

AMinimax statistics

BMinimal sufficient statistic

CEfficient

DSufficient statistic

Correct answer

B. Minimal sufficient statistic

Explanation

The correct answer is Minimal sufficient statistic.

257StatisticsMedium

If X N(55,49) then σ?

A104

B55

D49

Correct answer

C. 7

Explanation

The correct answer is 7.

258StatisticsMedium

Which of the following is not a correct statement about a Probability ________?

AIt is the collection of several experiment

BA value near 0 means that the event is not likely to occur/happens

CIt can be reported as a decimal or a fraction

DIt must have a value between 0 and 1

Correct answer

A. It is the collection of several experiment

Explanation

The correct answer is It is the collection of several experiment.

259StatisticsMedium

Data regarding opinions of consumers about some product obtained through lady workers are ________?

AExisting Sources

BPrimary

CSecondary

DCheapest method

Correct answer

A. Existing Sources

Explanation

The correct answer is Existing Sources.

260StatisticsMedium

A________ is the specific value of the statistic used to estimate the population parameter?

ANone of these

BPoint estimator

CC.I.

DEstimator

Correct answer

B. Point estimator

Explanation

The correct answer is Point estimator.

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