ships {MASS} | R Documentation |
Data frame giving the number of damage incidents and aggregate months of service by ship type, year of construction, and period of operation.
type |
type: "A" to "E"
|
year |
year of construction: 1960-64, 65-69, 70-74, 75-79
(coded as "60" , "65" , "70" , "75" )
|
period |
period of operation : 1960-74, 75-79 |
service |
aggregate months of service |
incidents |
number of damage incidents |
P. McCullagh and J. A. Nelder, (1983), Generalized Linear Models. Chapman & Hall, section 6.3.2, page 137