The survival data frame has 14 rows and 2 columns.
survival数据框有14行2列。
The data measured the survival percentages of batches of rats who were given varying doses of radiation. At each of 6 doses there were two or three replications of the experiment.
测得的数据批次分别给予不同剂量的辐射大鼠的存活百分比。 6剂量,每年有两个或三个重复实验。
用法----------Usage----------
survival
格式----------Format----------
This data frame contains the following columns:
这个数据框包含下列资料:
The dose of radiation administered (rads).
辐射剂量(拉德)。
The survival rate of the batches expressed as a percentage.
以百分比表示批次的成活率。
源----------Source----------
The data were obtained from
数据取自
Efron, B. (1988) Computer-intensive methods in statistical regression. SIAM Review, 30, 421–449.
埃弗龙,B.(1988)计算机密集型统计回归的方法。暹罗审查,30,421-449。
参考文献----------References----------
Bootstrap Methods and Their Application. Cambridge University Press.
转载请注明:出自 生物统计家园网(http://www.biostatistic.net)。