Displaying 4 results from an estimated 4 matches for "statsitics".
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statistics
2011 Apr 28
3
Simple General Statistics and R question (with 3 line example) - get z value from pairwise.wilcox.test
Hi there,
I am trying to do multiple pairwise Wilcoxon signed rank tests in a
manner similar to:
a <- c(runif(1000, min=1,max=50), rnorm(1000, 50), rnorm(1000, 49.9,
0.5), rgeom(1000, 0.5))
b <- c(rep("group_a", 1000), rep("group_b", 1000), rep("group_c",
1000), rep("group_d", 1000))
pairwise.wilcox.test(a, b, alternative="two.sided",
2005 Feb 16
2
phi correlation
Hello my big problem is, i can´t find the phi-correlation instruction in the
R - programm. (correlation method= spearman, pearson, kendall, I have
found)
I also cant find the transform instruction which I can transform rational
vector into nominal vectors (binary)
Transforming into ordinaI I have found with the “rank” instruction, but I
have no found into nominal dates.
Please help
2013 Feb 08
2
qcc package
Greets,
My data looks like:
> p3.18
s xbar subgroup
1 0.84 12.2 1
2 1.64 11.2 2
3 2.07 10.6 3
4 2.49 12.2 4
5 0.84 11.2 5
...
Using the command
> qcc(p3.18$xbar,type="xbar",sizes=5,center=mean(p3.18$xbar),std.dev=mean(p3.18$s)/0.94,title="X-bar Chart for Paper Sheet Length Data")
I get the x-bar chart I expect.
However,
2008 Jun 24
2
logistic regression
Hi everyone,
I'm sorry if this turns out to be more a statistical question than one
specifically about R - but would greatly appreciate your advice anyway.
I've been using a logistic regression model to look at the relationship
between a binary outcome (say, the odds of picking n white balls from a bag
containing m balls in total) and a variety of other binary parameters: