Injuries in Airflights
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.
data(flight)
A data frame with 9 observations on the following 2 variables.
Injury_IncidentsCount of injury incidents
Total_FlightsTotal 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)
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