ISS (Statistical Services) Statistics Paper II (New 2016 MCQ Pattern): Questions 30  35 of 253
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Question number: 30
» Statistical Inference and Hypothesis Testing » Characteristics of Good Estimator
Question
Let be a random sample from Bernoulli population with parameter , . If ,
Choices
Choice (4)  Response  

a.  The conditional distribution does not depend on 

b.  Is Sufficient for 

c.  Is not sufficient for 

d.  Both a. and b. are correct 

Question number: 31
» Statistical Inference and Hypothesis Testing » Characteristics of Good Estimator
Question
If T is an unbiased estimator for , then is
Choices
Choice (4)  Response  

a.  Biased estimator of 

b.  Unbiased estimator 

c.  None of the above 

d.  Question does not provide sufficient data or is vague 

Question number: 32
» Statistical Inference and Hypothesis Testing » Characteristics of Good Estimator
Question
A formula or rule used for estimating the parameter is called:
Choices
Choice (4)  Response  

a.  Estimation 

b.  Statistic 

c.  Estimate 

d.  Estimator 

Question number: 33
» Statistical Inference and Hypothesis Testing » Characteristics of Good Estimator
Question
In sampling from a population, the sample mean is a consistent estimator of
Choices
Choice (4)  Response  

a.  +1 

b. 


c. 


d.  All of the above 

Question number: 34
» Statistical Inference and Hypothesis Testing » Characteristics of Good Estimator
Question
Let be random sample from a population with mean. Then is
Choices
Choice (4)  Response  

a.  Unbiased estimator of 

b.  Unbiased estimator of 

c.  Biased estimator of 

d.  Question does not provide sufficient data or is vague 

Question number: 35
» Statistical Inference and Hypothesis Testing » Characteristics of Good Estimator
Question
Let be a random sample of size n = 3 from a distribution with mean and variance. If , and . Which one is the best estimator in terms of variance?
Choices
Choice (4)  Response  

a. 


b. 


c. 


d.  All of the above 
