Cherry: Cherry Blossom runs

In mdsr-book/mdsr: Complement to 'Modern Data Science with R'

Cherry Blossom runs

Description

Cherry Blossom runs

Usage

Cherry

Format

An object of class tbl_df (inherits from tbl, data.frame) with 41,248 rows and 8 columns. Each row refers to an individual runner in one race of the Cherry Blossom Ten Miler. The data cover the years 1999 to 2008. All of the runners listed ran at least two of the races in that period, some ran many more than that.

name.yob

a unique identifier for each runner composed of the runner's full name and year of birth.

age

integer giving the runner's age in the race whose result is being reported.

gun

the number of minutes elapsed from the starter's gun to the person crossing the finish line

net

the number of minutes elapsed from the runner's crossing the start line to crossing the finish line.

sex

the runner's sex

year

the year of that race

previous

integer specifying how many times previous to this race the runner had participated in the years 1999 to 2008.

nruns

integer giving the total number of times that runner participated in the years from 1999 to 2008. The smallest is 2, the largest is 10.

nruns

integer giving the total number of times that runner participated in the years from 1999 to 2008. The smallest is 2, the largest is 10.

Details

The Cherry Blossom 10 Mile Run is a road race held in Washington, D.C. in April each year. (The name comes from the famous cherry trees that are in bloom in April in Washington.) The results of this race are published at https://www.cherryblossom.org/post-race/race-results/.

Examples

if (require(dplyr)) {
  Cherry %>%
    group_by(name.yob) %>%
    count() %>%
    group_by(n) %>%
    count(name = "appearances")
}

mdsr-book/mdsr documentation built on Jan. 27, 2023, 1:57 p.m.