Probability & Stats: Finding a unique MVUE?

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SUMMARY

The discussion focuses on finding the unique Minimum Variance Unbiased Estimator (MVUE) for lnQ, given that X(1)...X(n) are independent and identically distributed (IID) random variables following a Poisson distribution with parameter lambda=lnQ. The user proposes using T=sum(X) as a sufficient statistic and suggests that lnQ*=sum(X)/n serves as an unbiased estimator for lnQ. The conversation emphasizes the need to demonstrate that T is a complete statistic and to apply the Cramér-Rao lower bound to establish the MVUE's efficiency.

PREREQUISITES
  • Understanding of Poisson distribution and its properties
  • Knowledge of sufficient statistics and completeness
  • Familiarity with Minimum Variance Unbiased Estimators (MVUE)
  • Concept of the Cramér-Rao lower bound
NEXT STEPS
  • Study the properties of Poisson distribution and its applications in statistics
  • Learn about sufficient statistics and how to prove completeness
  • Research the derivation and application of the Cramér-Rao lower bound
  • Explore examples of finding MVUE in various statistical contexts
USEFUL FOR

Statisticians, data analysts, and students studying advanced probability and statistics, particularly those interested in estimation theory and the properties of unbiased estimators.

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Homework Statement


Consider X(1)...X(n) IID X~ Poisson(lambda=lnQ), x=0,1,2..., Q >1

Find the Unique MVUE for lnQ?


Homework Equations





The Attempt at a Solution



i let T=sum(x), which is sufficient
and lnQ*=sum(x)/n be an unbiased estimator for lnQ

Not really sure how to show T is complete statistic and use it to find UMVE.

Any help will be appreciated

Thanks in advance
 
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can you show it is U & efficient, then look at the cramer lower bound to show it is MV

or something along those lines... don't have a text handy
 

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