## States of the U.S.A.

## Usage

    data(state)

## Description

Data sets related to the 50 states of the United States of America.

## Details

R currently contains the following `state' data sets. Note that all data are arranged according to alphabetical order of the state names.

- `state.abb`: character vector of 2-letter abbreviations for the state names.
- `state.area`: numeric vector of state areas (in square miles).
- `state.center`: list with components named `x` and `y` giving the approximate geographic center of each state in negative longitude and latitude. Alaska and Hawaii are placed just off the West Coast.
- `state.division`: factor giving state divisions (New England, Middle Atlantic, South Atlantic, East South Central, West South Central, East North Central, West North Central, Mountain, and Pacific).
- `state.name`: character vector giving the full state names
- `state.region`: factor giving the region (Northeast, South, North Central, West) that each state belongs to.
- `state.x77`: matrix with 50 rows and 8 columns giving the following statistics in the respective columns.
  - `Population`: population estimate as of July 1, 1975
  - `Income`: per capita income (1974)
  - `Illiteracy`: illiteracy (1970, percent of population)
  - `Life Exp`: life expectancy in years (1969㫟)
  - `Murder`: murder and non-negligent manslaughter rate per 100,000 population (1976)
  - `HS Grad`: percent high-school graduates (1970)
  - `Frost`: mean number of days with minimum temperature below freezing (1931�) in capital or large city
  - `Area`: land area in square miles

## Source

U.S. Department of Commerce, Bureau of the Census (1977). Statistical Abstract of the United States.

U.S. Department of Commerce, Bureau of the Census (1977). County and City Data Book.

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