Descriptive Statistics
The fundamental problem is to define and use measures to
summarize the data contained in a variable (the numbers,
or outcomes, the variable takes on), so that we may better
understand the characteristics of that variable.
There are

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Regression Analysis (Econometrics)
Regression analysis is probably the most powerful tool
economists and policy analysts have to test for the
existence of relationships between variables.
The starting point of regression analysis is a posited
behaviora

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Two-sample hypothesis tests
We are often interested in testing hypotheses about whether
two population parameters are identical (or different) for
two subsets of a population. Tests like this are actually
more common than single sample tests.
For examp

Syllabus
Economics 307
Fall 2015
Professor Hausman
Miller 1069
Textbook
Gary Smith, Introduction to Statistical Reasoning, plus supplementary material on Blackboard. This book
is out-of-print and will not be in the bookstore, but you should be able to fin

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There are many occasions when we will want to manipulate
a random variable. We will want to make a new random
variable that is a function of the original random variable.
The types of manipulations that are common include
multiplying the random variable

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Sampling Distributions: The Fundamental Building
Blocks of Statistical Analysis
Sampling distributions are probability distributions for
estimators. Estimators are the sample statistics we use to
make statements about population parameters. Population

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Plan for the next few weeks:
Sampling
Characteristics of sample statistics (estimators)
(Estimators are random variables.)
Confidence Interval Estimation
Hypothesis Testing
Sampling
To some extent this is where statistics (as a discipline)
really s

Probability Analysis
Three types of probability:
1. Classical, or a priori
2. Relative Frequency of Occurrence
3. Subjective (Bayesian)
Classical Probability (definitions)
Probability can be determined logically once the
conditions are described. Develop

I strongly recommend that you use this as a practice test. Study first and then see if you can answer the
questions.
1. There have been several stories recently about a perennial political issue, the existence of a "gender
gap." It usually is stated that