Description Format Source References Examples
Flights categorized by destination city, airline, and whether or not the flight was on time.
A data frame with 11000 observations on the following 3 variables.
Airport a factor with levels LosAngeles
Phoenix
SanDiego
SanFrancisco
Seattle
Result a factor with levels Delayed
OnTime
Airline a factor with levels Alaska
AmericaWest
Barnett, Arnold. 1994. “How numbers can trick you.” Technology Review, vol. 97, no. 7, pp. 38–45.
These and similar data appear in many text books under the topic of Simpson's paradox.
1 2 3 4 5 6 | row.perc(xtabs(~Airline+Result, data=airlineArrival))
for (city in levels(airlineArrival$Airport)) {
cat(paste('\nArriving in ', city,':\n',sep=''))
print(row.perc(xtabs(~Airline+Result, airlineArrival,
subset=Airport==city)))
}
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