ISS (Statistical Services) Statistics Paper II (New 2016 MCQ Pattern): Questions 43 - 47 of 253

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Question number: 43

» Statistical Inference and Hypothesis Testing » Characteristics of Good Estimator

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MCQ▾

Question

If , then which of the following is true?

Choices

Choice (4)Response

a.

is a biased estimator of

b.

c.

is a Unbiased estimator

d.

None of the above

Question number: 44

» Statistical Inference and Hypothesis Testing » Characteristics of Good Estimator

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MCQ▾

Question

If the mean of the estimator is not equal to the population parameter, the estimator is said to be:

Choices

Choice (4)Response

a.

Unbiased

b.

Negatively biased

c.

Biased

d.

Positively biased

Question number: 45

» Statistical Inference and Hypothesis Testing » Characteristics of Good Estimator

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MCQ▾

Question

If is a random sample from a Bernoulli population with parameter , then is

Choices

Choice (4)Response

a.

An unbiased estimator of

b.

A biased estimator of

c.

An unbiased estimator of +1

d.

Question does not provide sufficient data or is vague

Question number: 46

» Statistical Inference and Hypothesis Testing » Characteristics of Good Estimator

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MCQ▾

Question

If are normally distributed random variables with mean μ and variance , then sample variance is

Choices

Choice (4)Response

a.

Not an unbiased estimate of population variance

b.

Unbiased estimate of population variance

c.

d.

Both a. and c. are correct

Question number: 47

» Statistical Inference and Hypothesis Testing » Characteristics of Good Estimator

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MCQ▾

Question

Let be a random sample from a uniform population on [0, ]. Then the sufficient estimator for is

Choices

Choice (4)Response

a.

b.

c.

Question does not provide sufficient data or is vague

d.

All of the above

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