Message-ID: <590c6ca261712012b81a669e5e7ea3f3.squirrel@webmail.uic.edu>
Date: 2011-05-24T00:31:24Z
From: Sparks, John
Subject: Apply or Tapply to Build Set of Tables
Dear R Helpers,
First, I apologize for asking for help on the first of my topics. I have
been looking at the posts and pages for apply, tapply etc, and I know that
the solution to this must be ridiculously easy, but I just can't seem to
get my brain around it. If I want to produce a set of tables for all the
variables in my data, how can I do that without having to type them into
the table command one by one. So, I would like to use (t? s? r?)apply to
use one command instead of the following set of table commands:
data(infert, package = "datasets")
attach(infert)
table.education<-table(education)
table.age<-table(age)
table.parity<-table(parity)
etc.
To make matters worse, what I subsequently need is the chi-square for each
and all of the pairs of variables. Such as:
chi.education.age<-chisq.test(table(education,age))
chi.education.parity<-chisq.test(table(education,parity))
chi.age.parity<-chisq.test(table(age,parity))
etc.
Your guidance would be much appreciated.
--John J. Sparks, Ph.D.