OIdata (version 1.0)

military: US Military Demographics

Description

This dataset contains demographic information on every member of the US armed forces including gender, race, and rank.

Usage

data(military)

Format

A data frame with 1414593 observations on the following 6 variables.

grade

The status of the service member as enlisted officer or warrant officer.

branch

The branch of the armed forces: air force, army, marine corps, navy.

gender

Whether the service member is female or male.

race

The race identified by the service member: ami/aln (american indian/alaskan native), asian, black, multi (multi-ethinic), p/i (pacific islander), unk (unknown), or white.

hisp

Whether a service member identifies with being hispanic (TRUE) or not (FALSE).

rank

The numeric rank of the service member (higher number indicates higher rank).

Source

Data provided by the Department of Defense and made available at data.gov. Retrieval date: Feb 20, 2012.

Details

The branches covered by this data set include the Army, Navy, Air Force, and Marine Corps. Demographic information on the Coast Guard is contained in the original data set but has not been included here.

References

OpenIntro, openintro.org

Examples

data(military)
cond1 <- military$grade == "officer"
cond2 <- military$branch == "army"
cond3 <- military$gender == "female"
tabF  <- table(military$rank[cond1 & cond2 & cond3])
barplot((tabF/sum(tabF)), main = "female army officer ranks")
tabM  <- table(military$rank[cond1 & cond2 & !cond3])
barplot(tabM/sum(tabM), main = "male army officer ranks")

(tabFM <- table(military$branch, military$gender) /
          matrix(rep(table(military$branch), 2), ncol = 2))
barplot(tabFM[,1], main = "proportion female")