# ISS (Statistical Services) Statistics Paper II (New 2016 MCQ Pattern): Questions 201 - 205 of 253

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## Question number: 201

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MCQ▾

### Question

Degrees of freedom for the mean in case of large sample size is…………; and in case of for the small sample size is……. .

### Choices

Choice (4) Response

a.

and

b.

and

c.

and

d.

and n

## Question number: 202

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MCQ▾

### Question

In a class of consistent estimators for a parameter, which one will you consider as the most efficient estimator?

### Choices

Choice (4) Response

a.

One whose mean is less than the other estimators.

b.

One whose mean and variance both are less than the other estimators.

c.

One whose sampling variance is less than the other estimators.

d.

None of the above

## Question number: 203

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MCQ▾

### Question

It is given that , , . Then the Confidence Interval at is given by

### Choices

Choice (4) Response

a.

b.

c.

Both a. and b. are correct

d.

Question does not provide sufficient data or is vague

## Question number: 204

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MCQ▾

### Question

If T is an unbiased estimator for , then is biased estimator of

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 205

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MCQ▾

### Question

The set of equations obtained in the process of Least square estimation are called

### Choices

Choice (4) Response

a.

Simultaneous Equations

b.

Normal Equations

c.

Continuous Equations

d.

All of the above