vcdExtra: CyclingDeaths – R documentation

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CyclingDeaths

London Cycling Deaths

Description

A data frame containing the number of deaths of cyclists in London from 2005 through 2012 in each fortnightly period. Aberdein & Spiegelhalter (2013) discuss these data in relation to the observation that six cyclists died in London between Nov. 5 and Nov. 13, 2013.

Usage

data(CyclingDeaths)

Format

A data frame with 208 observations on the following 2 variables.

date: a Date
deaths: number of deaths, a numeric vector

Source

https://data.gov.uk/dataset/cb7ae6f0-4be6-4935-9277-47e5ce24a11f/road-safety-data, STATS 19 data, 2005-2012, using the files Casualty0512.csv and Accidents0512.csv

References

Aberdein, Jody and Spiegelhalter, David (2013). Have London's roads become more dangerous for cyclists? Significance, 10(6), 46–48.

Examples

data(CyclingDeaths)

plot(deaths ~ date, data=CyclingDeaths, type="h", 
	lwd=3, ylab="Number of deaths", axes=FALSE)
axis(1, at=seq(as.Date('2005-01-01'), by='years', length.out=9), labels=2005:2013)
axis(2, at=0:3)

# make a one-way frequency table
CyclingDeaths.tab <- table(CyclingDeaths$deaths)

gf <- goodfit(CyclingDeaths.tab)
gf
summary(gf)

rootogram(gf, xlab="Number of Deaths")
distplot(CyclingDeaths.tab)

# prob of 6 or more deaths in one fortnight
lambda <- gf$par$lambda
ppois(5, lambda, lower.tail=FALSE)

vcdExtra

'vcd' Extensions and Additions

v0.7-5

GPL (>= 2)

Authors

Michael Friendly [aut, cre], Heather Turner [ctb], Achim Zeileis [ctb], Duncan Murdoch [ctb], David Firth [ctb]

Initial release

2021-01-22