search for: proprotions

Displaying 9 results from an estimated 9 matches for "proprotions".

Did you mean: proportions
2011 Feb 10
0
Chi square test of proprotions in 2 groups of different sizes
Hello! Very sorry for a probably very simple question - I looked but did not find an answer in the archives. I have a table "counts" (below) that shows counts by Option within each of my 2 groups. However, my groups have different sizes (N1=255 and N2=68). Table "prop" shows the resulting proportions within each group. I would like to compare the proportions in 2 groups using
2002 Sep 25
5
CART vs. Random Forest
According to Dr. Breiman, the RF should be more accurate method than a single tree. However, the performance of each method seems to depend on the proprotion of outcome variable in my case. My data set is a typical classification problem (predict bad guys). When I ran both of them with different proportion of outcome variables(there's a criterion to measure the degree of bad behavior), I
2016 Jun 21
2
Metadata flooding
Hi, we use a tinc network of about 400 nodes, all of them linux servers, partly in different datacenters (but generally low latency). Usually this is working very well (for weeks without a problem). >From time to time the whole network goes down though. This happened when we restarted a larger number of servers or when there was a connectivity issue between datacenters or some (short)
2008 May 28
0
Sample size for 2-sample proportion tests
Hallo! I found a question exactly as mine, but I did not found an answer. Therefore?I post this again - hopefully there will be an answer! Thanks in advance! karl From: Berta <ibanez> Date: Tue, 27 Feb 2007 18:58:48 +0100 Hi R-users, I want to calculate the sample size needed to carry out a 2-sample proprotion test. I have the hypotesized treatment probability of success (0.80), the
2016 Jun 21
0
Metadata flooding
On Tue, Jun 21, 2016 at 01:04:31PM +0200, Hendrik Schumacher wrote: > From time to time the whole network goes down though. This happened when we > restarted a larger number of servers or when there was a connectivity issue > between datacenters or some (short) maintenance on the network > infrastructure. The problem was already described in the mailing list (for > example here:
2007 Dec 28
4
static box sizing problems
Hi, I tried this one over on the main wx-users list as well, but thought I would try it here since I am using wxRuby: I am using wxWidgets 2.8.7 on a linux box using the GTK build. I have pared down my issue to the simplest case: I am trying to use a horizontal BoxSizer to split a frame into two sections: a left and right side. I want the left side to stretch proportionally and I want the
2016 Jun 22
1
Metadata flooding
Thank you for the helpful advice. We will try to group the servers with different ConnectTo servers first. If this does not help we will look at the TunnelServer solution. Just to make sure we understand TunnelServer correctly: do you need to specify every host as ConnectTo that the host should be able to communicate with or is it sufficient to just provide the hosts files? Thanks, Hendrik
2007 Dec 11
2
the observed "log odds" in logistic regression
...riable, It is easy to understand the procedures how "log odds" are calculated. As I know, First the observations are grouped according to the IV and DV, generating a contingency table.The columns are the levels of IV, and the rows are the levels of DV(0, or 1).For each column,we get the proprotions for DV=0 and DV=1 at given IV. Using the proportions the log odds can be computed.Is that right? My problem is this : in my data set , the IVs are continuous variables, do I still have to generate such a table and compute the log odds for each level of IV according to which the log odds are c...
2006 Apr 25
5
Heteroskedasticity in Tobit models
Hello, I've had no luck finding an R package that has the ability to estimate a Tobit model allowing for heteroskedasticity (multiplicative, for example). Am I missing something in survReg? Is there another package that I'm unaware of? Is there an add-on package that will test for heteroskedasticity? Thanks for your help. Cheers, Alan Spearot -- Alan Spearot Department of Economics