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R语言:snails()函数中文帮助文档(中英文对照)

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发表于 2012-2-16 17:33:12 | 显示全部楼层 |阅读模式
snails(MASS)
snails()所属R语言包:MASS

                                         Snail Mortality Data
                                         钉螺死亡率数据

                                         译者:生物统计家园网 机器人LoveR

描述----------Description----------

Groups of 20 snails were held for periods of 1, 2, 3 or 4 weeks in carefully controlled conditions of temperature and relative humidity.  There were two species of snail, A and B, and the experiment was designed as a 4 by 3 by 4 by 2 completely randomized design.  At the end of the exposure time the snails were tested to see if they had survived; the process itself is fatal for the animals.  The object of the exercise was to model the probability of survival in terms of the stimulus variables, and in particular to test for differences between species.
20蜗牛的群体,在小心控制温度和相对湿度条件1,2,3或4周期间举行。有蜗牛,A和B两个物种,被设计为4 4 3 2完全随机设计的实验。蜗牛在曝光时间结束进行了测试,看看他们是否已经存活;的过程本身就是致命的动物。演习的目的是刺激变量的生存概率建模,特别是物种之间的差异测试。

The data are unusual in that in most cases fatalities during the experiment were fairly small.
这些数据是不寻常的,在大多数情况下,在实验过程中死亡人数是相当小的。


用法----------Usage----------


snails



格式----------Format----------

The data frame contains the following components:
数据框包含以下组件:

snail species A (1) or B (2).
蜗牛种(1)或B(2)。

exposure in weeks.
曝光在数周。

relative humidity (4 levels).
相对湿度(4级)。

temperature, in degrees Celsius (3 levels).
温度(摄氏度)(3级)。

number of deaths.
死亡人数。

number of snails exposed.
数暴露蜗牛。


源----------Source----------

Zoology Department, The University of Adelaide.
,阿德莱德大学动物学系。


参考文献----------References----------

Modern Applied Statistics with S-PLUS. Third Edition. Springer.
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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