Experiment on effects of diets on weight gain of rats
A data frame with 60 observations on the following 3 variables.
Gain
Weight gain (in grams per week)
Protein
Level of protein (Hi
or Lo
)
Source
Source of protein (Beef
, Cereal
, or Pork
)
Data from this experiment compared weight gain for 60 baby rats that were fed different diets. Half of the rats had low-protein diets (Lo) and the rest had high-protein (Hi). The source of protein was either beef, cereal, or pork.