Outline:  Review of terminology
 Basic operation of R
 Start with some simple data analysis
Review:  Feel comfortable with basic operation and programming in R (scripts, workspaces, execution, etc)
 Understand basic data representations and how to work with them (extracting, transforming, recombining)
Introduction to R: R is a programming language and a programming environment.
Data topics:  Table or spread sheet as the data model
 Basic plotting and bar charts
 Percentages versus incidence rates versus counts
Example datasets:  airmiles (time series  simple)
 sunspot.month (time series  more complicated)ex
 PlantGrowth (data frame)
 airquality (data frame)
Look at some real data:
In class exercise:  Download the data by race and ethnicity
 Read it into R
 Plot it using barplots.
