Description
a cross-section number of observations : 40
Format
A dataframe containing :
- type
- ship type, a factor with levels (A,B,C,D,E)
- constr
- year constructed, a factor with levels (C6064,C6569,C7074,C7579)
- operate
- year operated, a factor with levels (O6074,O7579)
- months
- measure of service amount
- acc
- accidents
Source
McCullagh, P. and J. Nelder (1983) Generalized linear methods, New York:Chapman and Hall.