flight: Injuries in Airflights
In ACSWR: A Companion Package for the Book "A Course in Statistics with R"

Description Usage Format References Examples

Injuries in airflights, road accidents, etc, are instances of rare occurrences which are appropriately modeled by a Poisson distribution. Two models, before and after transformation, are fit and it is checked if the transformation led to a reduction to the variance.

1	data(flight)

A data frame with 9 observations on the following 2 variables.

Injury_Incidents: Count of injury incidents
Total_Flights: Total number of flights

Chatterjee, S., and Hadi, A. S. (1977-2006). Regression Analysis by Examples, 4e. J. Wiley.

data(flight)
names(flight)
injurylm <- lm(Injury_Incidents~Total_Flights,data=flight)
injurysqrtlm <- lm(sqrt(Injury_Incidents)~Total_Flights,data=flight)
summary(injurylm)
summary(injurysqrtlm)