ISS (Statistical Services) Statistics Paper II (New 2016 MCQ Pattern): Questions 244 - 248 of 253

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Question number: 244

» Statistical Inference and Hypothesis Testing » Cramer-Rao Inequality

MCQ▾

Question

Cramer-Rao Inequality provides a Lower bond to the variance of an ________ estimator for a parameter.

Choices

Choice (4) Response

a.

Unbiased

b.

Consistent

c.

Maximum Likelihood estimator

d.

Sufficient

Question number: 245

» Statistical Inference and Hypothesis Testing » Simple and Composite Hypotheses

MCQ▾

Question

A Statistical Hypothesis, which specifies the population completely, is known as

Choices

Choice (4) Response

a.

Null Hypothesis

b.

Simple Hypothesis

c.

Composite Hypothesis

d.

Question does not provide sufficient data or is vague

Question number: 246

» Statistical Inference and Hypothesis Testing » Confidence Interval Estimation

MCQ▾

Question

The confidence level is 95%. This means

Choices

Choice (4) Response

a.

95 % of the samples do not contain the population mean and 5 % of the samples will contain the population mean

b.

95 % of the samples will contain the population mean and 5 % of the samples do not contain the population mean

c.

We are 100 % confident that the samples will contain the population mean

d.

None of the above

Question number: 247

» Official Statistics » National and International Official Statistical System

MCQ▾

Question

In an Irreducible Markov chain:

Choices

Choice (4) Response

a.

You can only move between 1 of two states

b.

All the states can communicate with each other

c.

There is at least one state when you can go with 0 probability.

d.

You can move from one state to another only in 1 direction

Question number: 248

» Linear Models » Gauss-Markov Linear Models

MCQ▾

Question

Which of the following is a property of a renewable process?

Choices

Choice (4) Response

a.

Inter arrival intervals may be identically distributed

b.

Inter arrival intervals are negative

c.

Inter arrival intervals are positive

d.

None of the above

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