Statistical Inference and Hypothesis TestingCharacteristics of Good Estimator (ISS (Statistical Services) Statistics Paper II (New 2016 MCQ Pattern)): Questions 53  54 of 54
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Question number: 53
» Statistical Inference and Hypothesis Testing » Characteristics of Good Estimator
Question
If is the most efficient estimator with variance and is any other estimator with variance , then the efficiency E of is defined as
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 54
» Statistical Inference and Hypothesis Testing » Characteristics of Good Estimator
Question
For a normal population , the variance of the sample mean and sample variance are given by and . Then which of the following is true?
Choices
Choice (4)  Response  

a.  Sample mean is more efficient estimator for than the sample median 

b.  Sample mean and Sample median are efficient 

c.  Sample median is more efficient estimator for than the sample mean 

d.  All of the above 
