Study on infant respiratory disease, namely the proportions of children developing bronchitis or pneumonia in their first year of life by type of feeding and sex.
A data frame with 6 observations on the following 4 variables.
number with disease
number without disease
a
factor with levels Boy
Girl
a factor with
levels Bottle
Breast
Suppl
data(babyfood)
## maybe str(babyfood) ; plot(babyfood) ...
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