The survival of prematurely born babies is modeled based on several characteristics.
d.babysurv is a data frame with 246 observations on the
following 6 variables. To be checked!!!
Binary variable to be modelled: The babies
Survival==1 have survived
Age in ...
Two scores that desribe the vitality of the baby
Blood pH at birth
d.babysurvGr contains summarized data: All babies in the same
weight class of width 100 are grouped. The other variables are
Number of babies in each weight class.
Number of babies that have not survived in each weight class.
Mean of weight class
1 2 3
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