chickwts(datasets)
chickwts()所属R语言包:datasets
Chicken Weights by Feed Type
饲料类型的鸡重量
译者:生物统计家园网 机器人LoveR
描述----------Description----------
An experiment was conducted to measure and compare the effectiveness of various feed supplements on the growth rate of chickens.
实验进行了测量和比较各种饲料添加剂,对鸡的生长率的有效性。
用法----------Usage----------
格式----------Format----------
A data frame with 71 observations on 2 variables.
与71两个变量的观测数据框。
weight a numeric variable giving the chick weight.
重量的数字变量,使鸡的重量。
feed a factor giving the feed type.
给予饲料类型饲料的一个因素。
Details
详情----------Details----------
Newly hatched chicks were randomly allocated into six groups, and each group was given a different feed supplement. Their weights in grams after six weeks are given along with feed types.
刚孵出的雏鸡,随机分为六组,每个组被赋予了不同的饲料添加剂。他们在六个星期后克的重量与饲料类型。
源----------Source----------
Anonymous (1948) Biometrika, 35, 214.
无名氏(1948年)Biometrika,35,214。
参考文献----------References----------
Interactive Data Analysis. New York: Wiley.
举例----------Examples----------
require(stats); require(graphics)
boxplot(weight ~ feed, data = chickwts, col = "lightgray",
varwidth = TRUE, notch = TRUE, main = "chickwt data",
ylab = "Weight at six weeks (gm)")
anova(fm1 <- lm(weight ~ feed, data = chickwts))
opar <- par(mfrow = c(2, 2), oma = c(0, 0, 1.1, 0),
mar = c(4.1, 4.1, 2.1, 1.1))
plot(fm1)
par(opar)
转载请注明:出自 生物统计家园网(http://www.biostatistic.net)。
注:
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