NAME: US INTERSTATE SYSTEM II
TYPE: Census
SIZE: 204 observations , 6 variables (2 numeric, 4 character)

DESCRIPTIVE ABSTRACT:
This dataset consists of a listing of all US interstate
highways, treating the highway/state combination 
as the sampling unit.  Three principal cities through which the
highway runs are given for each state.  Therefore, a single highway 
may have several observations, one observation for each state.

SOURCE:
Rand McNally - 1993 Business Traveler's Road Atlas and Guide
to Major Cities.

VARIABLE DESCRIPTIONS:
Interstate #            Columns 1-2
State                   Columns 4-5
Approximate miles       Columns 7-10
Principal City 1        Columns 12-28
Principal City 2        Columns 30-46 
Principal City 3        Columns 48-64

SPECIAL NOTES:
The miles are approximate, as author read them off maps using
guide markers provided along highways.

STORY BEHIND THE DATA:
Author, who is very interested in maps, geography, and U.S.
transportation system had a lot of free time one weekend. He
knew of no source that provided such information. Other datasets
were also created at the same time.

PEDAGOGICAL NOTES:
While this data may be more suited for cocktail parties than
the classroom, it does allow a teacher to use some actual data
when teaching concepts of descriptive statistics, such as graphical
and numeric descriptions of a set of measurements. After having
taught many classes and using the terms 'suppose we have the following
measurements ...', the author vowed to get more interesting data.
Further, when used with other variables, such as population and area, 
multivariate relationships can be observed. 

SUBMITTED BY:
Larry Winner
Department of Statistics, University of Florida
103 Griffin/Floyd Hall, Gainesville, FL 32611
winner@stat.ufl.edu