I am having two problems creating data frames that I have solutions, but
they really seem like kludges and I assume I just don't understand the
proper R way of doing things.
The first situation is I have an set of uneven data vectors. When I try to
use them to create a data frame I would like the
I have an R program I am attempting to use to generate some SVGs. I've been
using the cairoDevice library. When running a session not connected to an X
session (like if I'm sshed in), attempting library(cairoDevice) causes:
*** caught segfault ***
address 0x8, cause 'memory not mapped'
I have been trying to figure out how to run a simple simulation of the ANOVA
and I'm coming up just a bit short. The code I've got is:
cohen.f = .25
groups = 4
between.var = 19
within.var = between.var / cohen.f ^ 2
n = 500
sim.means = rnorm(n = groups, mean = 0, sd = sqrt(between.var))
sim.data
I sent a message a couple days ago about doing calculations for power of the
ANOVA. Several people got back to me very quickly which I really
appreciated.
I'm working now on a similar problem, but instead of a balanced ANOVA, I
have an unbalanced one. The first part of the question was:
You
distribution
noncentral.p = pf(central.quart, J - 1, N - J, noncentral.param,
lower.tail= FALSE)
Will
2008/2/21 Will Holcomb [EMAIL PROTECTED]:
I sent a message a couple days ago about doing calculations for power of
the ANOVA. Several people got back to me very quickly which I really
appreciated.
I'm
I have been attempting some basic power calculations using R and I am not
getting the results I expect. I had a homework assignment in SAS, but I want
to learn R as well, so I was attempting to reproduce my result. (No one else
in the class is doing R, so there's no need to obsfucate the answer,
be able to take it from there. (Since this is a homework
problem, I'm being intentionally vague.)
cheers,
Simon.
On Wed, 2008-01-30 at 18:47 -0600, Will Holcomb wrote:
My grasp of R and statistics are both seriously lacking, so if this
question
is completely naive, I apologize in advance
,
--
*From:* [EMAIL PROTECTED] on behalf of Will Holcomb
*Sent:* Thu 1/31/2008 8:10 AM
*To:* Simon Blomberg
*Cc:* r-help
*Subject:* Re: [R] difficulties computing a simple anova
Excellent. I was able to do the analysis with no problem. I just had to
do
some twiddling
My grasp of R and statistics are both seriously lacking, so if this question
is completely naive, I apologize in advance. I've hunted for a couple hours
on the internet and none of the methods I've found have produced the result
I'm looking for.
I'm currently a student in a Statistics class and
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