ISS (Statistical Services) Statistics Paper II (New 2016 MCQ Pattern): Questions 55 - 59 of 246

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Question number: 55

» Statistical Inference and Hypothesis Testing » Characteristics of Good Estimator

MCQ▾

Question

A biased estimator is consistent if

Choices

Choice (4) Response

a.

b.

c.

d.

None of the above

Question number: 56

» Statistical Inference and Hypothesis Testing » Characteristics of Good Estimator

MCQ▾

Question

A random sample of size 5 is drawn from a normal population with unknown mean . Then is a unbiased estimator of

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 57

» Statistical Inference and Hypothesis Testing » Characteristics of Good Estimator

MCQ▾

Question

For normal distribution

Choices

Choice (4) Response

a.

Sample mean is more efficient estimator than the sample median. Since,

b.

Sample median is more efficient estimator than the sample mean. Since,

c.

Sample median is more efficient estimator. Since,

d.

None of the above

Question number: 58

» Statistical Inference and Hypothesis Testing » Characteristics of Good Estimator

MCQ▾

Question

Let be a sample of size n = 3 from a distribution with mean and variance . Then and are

Choices

Choice (4) Response

a.

Only is unbiased estimator

b.

and are biased estimators

c.

and are unbiased estimators

d.

None of the above

Question number: 59

» Statistical Inference and Hypothesis Testing » Characteristics of Good Estimator

MCQ▾

Question

The mean of a random sample is always an unbiased estimate of the population mean μ. This statement is

Choices

Choice (4) Response

a.

True for all distributions

b.

False

c.

True only for binomial distribution

d.

All of the above

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