Displaying 3 results from an estimated 3 matches for "microarri".
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microarry
2003 May 17
2
max/summary
Hi,
What is the reason for getting two different max of a
vector from two functions max() and summary()? Here is
an example,
> set.seed(2222)
> x <- sample(x=1:100000, size=10000, replace=T)
> max(x)
[1] 99992
> summary(x)
Min. 1st Qu. Median Mean 3rd Qu. Max.
6 24510 49950 50020 75040 99990
Which value is the correct one? I had this problem
while I
2008 Mar 04
2
paired or one-sample t-Test
Hi Guys,
I am having a real hard time trying to figure out for microarry.
Here is my code
One-Sample t-Test
dim(data.sub)
[1] 10000 140 ##there are 10000 probesets and 140 columns
hist(data.sub) ## Histogram. Identify if the probesets are normal
distributed
q<-rnorm(10000) ##generate 10000 random, normal distributed values
qqplot(data.sub,q)) ##Show the plot of the probeset
2004 Oct 15
8
Testing for normality of residuals in a regression model
Hi all,
Is it possible to have a test value for assessing the normality of
residuals from a linear regression model, instead of simply relying on
qqplots?
I've tried to use fitdistr to try and fit the residuals with a normal
distribution, but fitdsitr only returns the parameters of the
distribution and the standard errors, not the p-value. Am I missing
something?
Cheers,
Federico