Exam Information
Material Type:  Final 
Professor:  Hu 
Class:  ECON 321  ECON STAT 
Subject:  Economics 
University:  University of Maryland 
Term:   
Keywords:   Percent Error
 The Independent
 Determination
 Explanation
 Observations
 Random Sample
 High Temperatures
 Independent Events
 No Correlation
 Coefficient of Determination

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Sample Document Text
)
Economics '21
KWF 12:00  12:50 PH
FINAL EXAM
Spring 1987
Dr. Arun Halik
The exam is divided into 5 sections. Skim the various sections to
see how points are allocated before you begin answering questions.
Some questions have several parts to them. These parts don't
always depend on each other. So even if you can't answer the first
part of a question you may be able to answer later parts. Don't
give up on a question just because you can't answer part of it.,
As usual, if you want partial credit, show all your work. For some
problems, diagrams may be helpful.
Read questions carefully and answer them as clearly and precisBly
as you can.
Probability tables are attached.
GOOD LUCK!
SECTION 1. (15 pcdnts)
(3 points eacb).
1. Briefly expl~lin the difference between a parameter and a statistic.
2. What is a simple random sample?
3. What is a stratified random sample?
4. What is the sampling distribution of a statistic? (Just define thE~ term
sampling distribution.)
...
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