ISS (Statistical Services) Statistics Paper II (New 2016 MCQ Pattern): Questions 30 - 35 of 253

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Question number: 30

» Statistical Inference and Hypothesis Testing » Characteristics of Good Estimator

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MCQ▾

Question

Let be a random sample from Bernoulli population with parameter , . If ,

Choices

Choice (4) Response

a.

The conditional distribution does not depend on

b.

Is Sufficient for

c.

Is not sufficient for

d.

Both a. and b. are correct

Question number: 31

» Statistical Inference and Hypothesis Testing » Characteristics of Good Estimator

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MCQ▾

Question

If T is an unbiased estimator for , then is

Choices

Choice (4) Response

a.

Biased estimator of

b.

Unbiased estimator

c.

None of the above

d.

Question does not provide sufficient data or is vague

Question number: 32

» Statistical Inference and Hypothesis Testing » Characteristics of Good Estimator

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MCQ▾

Question

A formula or rule used for estimating the parameter is called:

Choices

Choice (4) Response

a.

Estimation

b.

Statistic

c.

Estimate

d.

Estimator

Question number: 33

» Statistical Inference and Hypothesis Testing » Characteristics of Good Estimator

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MCQ▾

Question

In sampling from a population, the sample mean is a consistent estimator of

Choices

Choice (4) Response

a.

+1

b.

c.

d.

All of the above

Question number: 34

» Statistical Inference and Hypothesis Testing » Characteristics of Good Estimator

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MCQ▾

Question

Let be random sample from a population with mean . Then is

Choices

Choice (4) Response

a.

Unbiased estimator of

b.

Unbiased estimator of

c.

Biased estimator of

d.

Question does not provide sufficient data or is vague

Question number: 35

» Statistical Inference and Hypothesis Testing » Characteristics of Good Estimator

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MCQ▾

Question

Let be a random sample of size n = 3 from a distribution with mean and variance . If , and . Which one is the best estimator in terms of variance?

Choices

Choice (4) Response

a.

b.

c.

d.

All of the above