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Statistics MCQs with Explanations

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381StatisticsMedium

The mean of a distribution is 14 and the standard deviation is 5. What is the value of the coefficient of variation?

A48.3%

B35.7%

C27.8%

D60.4%

Correct answer

B. 35.7%

Explanation

The correct answer is 35.7%.

382StatisticsMedium

The median of the data 2, 4, 10, 8, 6 is ________?

B10

CNone of these

Correct answer

A. 5

Explanation

The correct answer is 5.

383StatisticsMedium

Sampling error cannot occur in________?

ACensus

BSampling

CSurvey

DNone of these

Correct answer

A. Census

Explanation

The correct answer is Census.

384StatisticsMedium

Which of the following is a true statement for comparing the t distribution with standard normal?

AThe Normal Curve is symmetrical whereas the t-distribution are slightly skewed.

BGreater the degree of freedom, the more the t-distribution resembles the standard normal distribution

CNon of these

DThe proportion of area beyond a specific value of “t” is less than the proportion of normal curve

Correct answer

B. Greater the degree of freedom, the more the t-distribution resembles the standard normal distribution

Explanation

The correct answer is Greater the degree of freedom, the more the t-distribution resembles the standard normal distribution.

385StatisticsMedium

If we reject the null hypothesis, we might be making________?

AA correct Decision

BType-II Error

CUnpredictable

DType-Error

Correct answer

B. Type-II Error

Explanation

The correct answer is Type-II Error.

386StatisticsMedium

making a entrance slip in service hospital is the method of collection of data by________?

ARegistration

Bnone of these

CCorrespondents

DEntry

Correct answer

A. Registration

Explanation

The correct answer is Registration.

387StatisticsMedium

Harmonic mean cannot be calculated if any one of the values in the data is ________?

ANegative

BPositive

CAll sign

DZero

Correct answer

D. Zero

Explanation

The correct answer is Zero.

388StatisticsMedium

There are ________ parameter in Binomial distribution?

An, q

Bq, p

Cn, p, q

Dn, p

Correct answer

D. n, p

Explanation

The correct answer is n, p.

389StatisticsMedium

Random samples of size 17 are from a population that has 200 elements, a mean of 36, and a standard deviation of 8. which of the following best describes the from of the sampling distribution of the sample mean for this situation?

AExactly

BNone of these alternatives is correct

CApproximately normal because of the central limit theorem

DApproximately normal because the sample size is small relative to the population size

Correct answer

B. None of these alternatives is correct

Explanation

The correct answer is None of these alternatives is correct.

390StatisticsMedium

The height of a student is 60 inches. This is an example of________?

ACategorical data

BDiscrete data

CQualitative data

DContinuous data

Correct answer

D. Continuous data

Explanation

The correct answer is Continuous data.

Which of the following is a true statement for comparing the t distribution with standard normal?

AThe Normal Curve is symmetrical whereas the t-distribution are slightly skewed.

BGreater the degree of freedom, the more the t-distribution resembles the standard normal distribution

CNon of these

DThe proportion of area beyond a specific value of “t” is less than the proportion of normal curve

Correct answer

B. Greater the degree of freedom, the more the t-distribution resembles the standard normal distribution

Explanation

The correct answer is Greater the degree of freedom, the more the t-distribution resembles the standard normal distribution.

Random samples of size 17 are from a population that has 200 elements, a mean of 36, and a standard deviation of 8. which of the following best describes the from of the sampling distribution of the sample mean for this situation?

AExactly

BNone of these alternatives is correct

CApproximately normal because of the central limit theorem

DApproximately normal because the sample size is small relative to the population size

Correct answer

B. None of these alternatives is correct

Explanation

The correct answer is None of these alternatives is correct.