counties {SDAResources}

counties data

Description

Data (from 1990) from an SRS of 100 of the 3141 counties in the United States. Missing values are coded as NA.

Usage

data(counties)

Format

This data frame contains the following columns:

RN:

random number used to select the county

state:

state abbreviation

county:

county name

landarea:

land area, 1990 (square miles)

totpop:

total number of persons, 1992

physician:

active non-Federal physicians on Jan. 1, 1990

enroll:

school enrollment in elementary or high school, 1990

percpub:

percent of school enrollment in public schools

civlabor:

civilian labor force, 1991

unemp:

number unemployed, 1991

farmpop:

farm population, 1990

numfarm:

number of farms, 1987

farmacre:

acreage in farms, 1987

fedgrant:

total expenditures in federal funds and grants, 1992 (millions of dollars)

fedciv:

civilians employed by federal government, 1990

milit:

military personnel, 1990

veterans:

number of veterans, 1990

percviet:

percent of veterans from Vietnam era, 1990

References

Source: U.S. Census Bureau (1994).

Lohr (2021), Sampling: Design and Analysis, 3rd Edition. Boca Raton, FL: CRC Press.

Lu and Lohr (2021), R Companion for Sampling: Design and Analysis, 3rd Edition, 1st Edition. Boca Raton, FL: CRC Press.