The down data frame has 30 rows and 3 columns. Variable cases means the number of babies with Down syndrome out of total number of births births for mothers with mean age age.
down数据框有30行,3列。变量“cases是指的婴儿患有唐氏综合症的总出生人数births,平均年龄age的母亲。
用法----------Usage----------
data(down)
格式----------Format----------
A data frame with 30 observations on the following 3 variables.
一种数据框与30上的以下3个变量的观测。
age the mothers' mean age.
age母亲的平均年龄。
births count of total births.
births总出生数。
cases count of babies with Down syndrome.
cases数的婴儿患有唐氏综合症。
源----------Source----------
Davison, A.C. and Hinkley, D. V. (1997) Bootstrap Methods and their Application. Cambridge University Press.
戴维森,AC欣克利,DV(1997)Bootstrap方法及其应用。剑桥大学出版社。
参考文献----------References----------
convex logistic regression. Journal of the American Statistical Association 86, 717–724.