fastR (version 0.10.3)

births78: Births by Day

Description

The number of live births in the United States for each day of the year 1978.

Format

A data frame with 365 observations on the following 3 variables.

• date date (as a factor)

• births number of live births

• dayofyear number of days since start of year

Examples

# NOT RUN {
data(births78)
xyplot(births ~ dayofyear, births78)

# }