ChickWeight(datasets)
ChickWeight()所属R语言包：datasets
Weight versus age of chicks on different diets
雏鸡的体重与年龄不同的饮食
译者：生物统计家园网 机器人LoveR
描述----------Description----------
The ChickWeight data frame has 578 rows and 4 columns from an experiment on the effect of diet on early growth of chicks.
ChickWeight数据框有578行和4列从饮食对雏鸡早期生长的影响试验。
用法----------Usage----------
格式----------Format----------
This object of class c("nfnGroupedData", "nfGroupedData", "groupedData", "data.frame") containing the following columns:
本类c("nfnGroupedData", "nfGroupedData", "groupedData", "data.frame")包含下列对象：
a numeric vector giving the body weight of the chick (gm).
数字矢量小鸡（GM）的体重。
a numeric vector giving the number of days since birth when the measurement was made.
测量时的一个数值向量自出生天数。
an ordered factor with levels 18 < ... < 48 giving a unique identifier for the chick. The ordering of the levels groups chicks on the same diet together and orders them according to their final weight (lightest to heaviest) within diet.
同级别的有序因子18<... <48给人一种小鸡的唯一标识符。水平组雏鸡订购相同的饮食和订单，他们根据他们最后的重量（最轻到最重的）内饮食。
a factor with levels 1,...,4 indicating which experimental diet the chick received.
水平1，...，实验饮食小鸡收到4倍。
Details
详情----------Details----------
The body weights of the chicks were measured at birth and every second day thereafter until day 20. They were also measured on day 21. There were four groups on chicks on different protein diets.
出生小鸡的体重测量，此后每隔一天，直到20天。他们还测量了21天。有四组对不同的蛋白质饲料的雏鸡。
This dataset was originally part of package nlme, and that has methods (including for [, as.data.frame, plot and print) for its grouped-data classes.
此数据集原是包nlme部分，并具有分组数据类的方法（包括[，as.data.frame，plot和print） 。
源----------Source----------
Crowder, M. and Hand, D. (1990), Analysis of Repeated Measures, Chapman and Hall (example 5.3)
克罗德，M.和手，D.（1990），分析重复测量，查普曼和霍尔（例如5.3）
Hand, D. and Crowder, M. (1996), Practical Longitudinal Data Analysis, Chapman and Hall (table A.2)
另一方面，D.和克罗德，M.（1996），实用的纵向数据分析，查普曼和霍尔（表A.2）
Pinheiro, J. C. and Bates, D. M. (2000) Mixed-effects Models in S and S-PLUS, Springer.
皮涅伊罗，JC和Bates，DM（2000）混合效应模型在S和S-PLUS，施普林格。
参见----------See Also----------
SSlogis for models fitted to this dataset.
SSlogis装到这个数据集的模型。
举例----------Examples----------
require(graphics)
coplot(weight ~ Time | Chick, data = ChickWeight,
type = "b", show.given = FALSE)
转载请注明:出自 生物统计家园网(http://www.biostatistic.net)。
注：
注1：为了方便大家学习，本文档为生物统计家园网机器人LoveR翻译而成，仅供个人R语言学习参考使用，生物统计家园保留版权。
注2：由于是机器人自动翻译，难免有不准确之处，使用时仔细对照中、英文内容进行反复理解，可以帮助R语言的学习。
注3：如遇到不准确之处，请在本贴的后面进行回帖，我们会逐渐进行修订。
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发表于 2012-2-16 20:15:44
