R: Modal ancestry by County according to US 2000 Census

ancestry {latticeExtra} | R Documentation

## Modal ancestry by County according to US 2000 Census

### Description

This data set records the population and the three most frequently reported ancestries by US county, according to the 2000 census.

### Usage

    data(ancestry)

### Format

A data frame with 3219 observations on the following 5 variables.

`county`

  A factor. An attempt has been made to make the levels look similar to the county names used in the `maps` package.

`population`

  a numeric vector

`top`

  a character vector

`second`

  a character vector

`third`

  a character vector

### Source

U.S. Census Bureau. The ancestry data were extracted from Summary File 3, available from

http://www.census.gov/census2000/sumfile3.html

which is based on the ‘long form’ questionnaire (asked to 1 in 6 households surveyed).

### References

http://www.census.gov/prod/cen2000/doc/sf3.pdf

### See Also

`mapplot`, for examples.

[Package latticeExtra version 0.6-28 Index]