Datasets for Statistical Analysis

Weight gain in rats

Keywords:

weight, protein, rats

Categories:

biology;
designed experiments, regression

Description:

The data give the weight gain for rats fed on four different diets: combinations of protein source and protein amount.

The design is a completely randomized design with ten rats randomly allocated to each of the four treatments.

There are forty observations on three variables.

Variables:

Gain	The weight gain (units unknown)
Protein	The protein source: either Beef or Cereal.
Amount	The amount of protein: either High or Low.

Data Quality:

There are no missing values.

Source:

Hand et al, dataset 9.

Notes:

A nice ANOVA problem with repeated observations.

References:

The original source is Snedecor, G. E. and Cochran, G. C. (1967). Statistical Methods, 6th edition, Ames, Iowa: Iowa State University Press, p 347.