
Overview
 Why Study Probability?
 We study probability because the relationships between
samples and populations is usually stated in terms of probability.
Probability plays a central in inferential statistics.
 Probability and Inferential Statistics
 The goal of inferential statistics is to use the limited
information we have in a sample to draw general conclusions
about the population. Probability allows us to start with
a population and predict what kind of sample is likely to
be obtained from it. Inferential statistics allows us to
say how probable the sample is to have come from a particular
population.
 Probability and Frequency Distributions
 We are usually concerned about probability when we have
a population frequency distribution: We want to know how
probable it is to obtain a specific sample. For this reason
we discuss Normal and
Binomial distributions,
the two most commonly used in statistics.
 Introduction to Probability
 Probability and the Normal
Distribution
 Probability and the Binomial
Distribution
Web Demos
