# ISS (Statistical Services) Statistics Paper II (New 2016 MCQ Pattern): Questions 51 - 55 of 246

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## Question number: 51

MCQ▾

### Question

If , _is a random sample of size n, from , a statistic

is an unbiased estimator of if

### Choices

Choice (4) Response

a.

If

b.

If

c.

If

d.

If

## Question number: 52

MCQ▾

### Question

If an estimator of parameter , converges in probability to the true value of , then the estimator is called as

### Choices

Choice (4) Response

a.

Consistent estimator

b.

Biased Estimator

c.

Unbiased estimator

d.

All of the above

## Question number: 53

MCQ▾

### Question

The difference between the expected value of an estimator and the value of the corresponding parameter is called:

### Choices

Choice (4) Response

a.

Error of estimation

b.

Sampling error

c.

Standard error

d.

Bias

## Question number: 54

MCQ▾

### Question

Let be a random sample of size n = 3 from a distribution with mean and variance. Then is a unbiased estimator of

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 55

MCQ▾

### Question

A biased estimator is consistent if

### Choices

Choice (4) Response

a.

b.

c.

d.

None of the above

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