R: US Births in 1969 - 1988

Birthdays

R Documentation

US Births in 1969 - 1988

Description

A day by day record of the number of births in each US State.

Usage

data(Birthdays)

Format

A data frame with 374221 observations on the following variables.

state: state where child was born
year: year (1969-1988)
month: month (1-12)
day: day of month
date: date as a date object
wday: Day of week (ordered factor)
births: number of births

See Also

Births, Births78, Births2015, BirthsSSA, BirthsCDC for data sets that are aggregated at the level of the entire country.

Examples

data(Birthdays)
if (require(mosaic)) {
  MI <- Birthdays |> filter(state == "MI")
  gf_point(births ~ date, Birthdays, data = MI)
  gf_line(births ~ date, Birthdays, data = MI, color = ~ wday)
  gf_line(births ~ date,
    data = Birthdays |> group_by(date) |> summarise(births = sum(births)))
  }