Statistical Inference and Hypothesis TestingCharacteristics of Good Estimator (ISS Statistics Paper II (New 2016 MCQ Pattern)): Questions 39  44 of 54
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Question number: 39
» Statistical Inference and Hypothesis Testing » Characteristics of Good Estimator
Question
A statistic is biased if the mean of the sampling distribution of the statistic is
Choices
Choice (4)  Response  

a.  Equal to the parameter 

b.  Not equal to the parameter. 

c.  Less than the parameter 

d.  Question does not provide sufficient data or is vague 

Question number: 40
» Statistical Inference and Hypothesis Testing » Characteristics of Good Estimator
Question
The mean of a random sample is always a consistent estimator of the population mean μ. This statement is
Choices
Choice (4)  Response  

a.  True for all distributions 

b.  False 

c.  True only for Bernoulli distribution 

d.  All of the above 

Question number: 41
» Statistical Inference and Hypothesis Testing » Characteristics of Good Estimator
Question
is an ________ where as is an ________
Choices
Choice (4)  Response  

a.  Estimate and an estimator 

b.  Estimator and an estimate 

c.  Question does not provide sufficient data or is vague 

d.  All of the above 

Question number: 42
» Statistical Inference and Hypothesis Testing » Characteristics of Good Estimator
Question
Efficiency of sample mean as compared to median as an estimate of the mean of a normal population is
Choices
Choice (4)  Response  

a.  64 percent 

b.  157 percent 

c.  360 percent 

d.  22 percent 

Question number: 43
» Statistical Inference and Hypothesis Testing » Characteristics of Good Estimator
Question
If the expected value of an estimator is not equal to its parametric function , it is said to be a
Choices
Choice (4)  Response  

a.  Unbiased estimator 

b.  Consistent estimator 

c.  Biased estimator 

d.  Sufficient estimator 

Question number: 44
» Statistical Inference and Hypothesis Testing » Characteristics of Good Estimator
Question
If an estimator of population parameter converges in probability to as n tends to infinity is said to be
Choices
Choice (4)  Response  

a.  Efficient 

b.  Consistent 

c.  Unbiased 

d.  Sufficient 
