US Births in 1969 - 1988

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

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)))
  }
#> Loading required package: mosaic
#> Registered S3 method overwritten by 'mosaic':
#>   method                           from   
#>   fortify.SpatialPolygonsDataFrame ggplot2
#> 
#> The 'mosaic' package masks several functions from core packages in order to add 
#> additional features.  The original behavior of these functions should not be affected by this.
#> 
#> Attaching package: ‘mosaic’
#> The following objects are masked from ‘package:dplyr’:
#> 
#>     count, do, tally
#> The following object is masked from ‘package:Matrix’:
#> 
#>     mean
#> The following object is masked from ‘package:ggplot2’:
#> 
#>     stat
#> The following objects are masked from ‘package:stats’:
#> 
#>     IQR, binom.test, cor, cor.test, cov, fivenum, median, prop.test,
#>     quantile, sd, t.test, var
#> The following objects are masked from ‘package:base’:
#> 
#>     max, mean, min, prod, range, sample, sum