# ISS (Statistical Services) Statistics Paper II (New 2016 MCQ Pattern): Questions 44 - 48 of 253

Access detailed explanations (illustrated with images and videos) to 253 questions. Access all new questions- tracking exam pattern and syllabus. View the complete topic-wise distribution of questions. Unlimited Access, Unlimited Time, on Unlimited Devices!

View Sample Explanation or View Features.

Rs. 200.00 -OR-

## Question 44

### Question

MCQ▾

If the mean of the estimator is not equal to the population parameter, the estimator is said to be:

### Choices

Choice (4)Response

a.

Unbiased

b.

Negatively biased

c.

Biased

d.

Positively biased

## Question 45

### Question

MCQ▾

If is a random sample from a Bernoulli population with parameter , then is

### Choices

Choice (4)Response

a.

An unbiased estimator of

b.

A biased estimator of

c.

An unbiased estimator of + 1

d.

Question does not provide sufficient data or is vague

## Question 46

### Question

MCQ▾

If are normally distributed random variables with mean μ and variance , then sample variance is

### Choices

Choice (4)Response

a.

Not an unbiased estimate of population variance

b.

Unbiased estimate of population variance

c.

d.

Both a. and c. are correct

## Question 47

### Question

MCQ▾

Let be a random sample from a uniform population on [0, ] . Then the sufficient estimator for is

### Choices

Choice (4)Response

a.

b.

c.

Question does not provide sufficient data or is vague

d.

All of the above

## Question 48

### Question

MCQ▾

A random sample of size 5 is drawn from a normal population with mean and . And if , , Which one is the best estimator in terms of variance?

### Choices

Choice (4)Response

a.

b.

c.

d.

Question does not provide sufficient data or is vague