weights: weights: Weight Gain in Cows under Different Diets

In thoree/stat340: Data and functions for BIAS at NMBU

weights: Weight Gain in Cows under Different Diets

Description

This is data from a farm-scale trial of animal diets, a factorial experiment. 48 cows were given combinations of three different diets and three diet supplements. 12 of the cows did not have supplements to the diet. The weight gain for each cow was measured after six weeks.

Usage

weights

Format

A data frame with 48 observations (rows) and 3 variables (columns).

	Column name	Data type	Description	Values
[,1]	supplement	factor	3 diet supplements	(agrimore, control, supergain, supersupp)
[,2]	diet	factor	3 different diets	(barley, oats, wheat)
[,3]	gain	numeric	The weight gain in kg	(15.78 - 29.03)

Source

⁠The R book⁠, M.J. Crawley, Wiley, 2007.

Examples

# A short summary of the variables
summary(weights)

# Weight gain without diet supplement
controls <- weights[which(weights$supplement == "control"), ]
boxplot(gain ~ diet, data = weights)

thoree/stat340 documentation built on June 30, 2024, 4:04 p.m.