ISS (Statistical Services) Statistics Paper II (New 2016 MCQ Pattern): Questions 116 - 119 of 253

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Question number: 116

» Statistical Inference and Hypothesis Testing » Moments and Least Squares

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MCQ▾

Question

Method of least squares consists of

Choices

Choice (4) Response

a.

Minimizing the sum of squares of residuals

b.

Maximizing the sum of squares of residuals

c.

Question does not provide sufficient data or is vague

d.

None of the above

Question number: 117

» Statistical Inference and Hypothesis Testing » Sufficient Estimator

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Question

If a statistics is a sufficient statistics for a parameter of the density function , then the conditional distribution of is ………. of for any value of

Choices

Choice (4) Response

a.

Dependent

b.

Either dependent or Independent

c.

Independent

d.

All of the above

Question number: 118

» Statistical Inference and Hypothesis Testing » Factorization Theorem

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Question

is sufficient for if and only if the joint density function , of the sample values can be expressed in the form

where depends on and only through the value of and is independent of . This Theorem is known as

Choices

Choice (4) Response

a.

Factorization Theorem

b.

Blackwell Theorem

c.

Rao-Blackwell Theorem

d.

Cramer-Rao Theorem

Question number: 119

» Statistical Inference and Hypothesis Testing » Characteristics of Good Estimator

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Question

Efficiency of sample mean as compared to median as an estimate of the mean of a normal population is

Choices

Choice (4) Response

a.

22 percent

b.

64 percent

c.

360 percent

d.

157 percent