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2009 Aug 28
1
extracting pvalues from ttest
Hello list,
I have a similar issue as this post
http://tolstoy.newcastle.edu.au/R/e6/help/09/04/11438.html#options2 and I
used the suggestion provided by Jorge with modifications to my data
do.call(c,lapply(your_list_with_the_t_tests,function(x) x$p.value))
but I am getting the following error after excuting the code
B<-by(eo,eo$PlateID, function(.sub) t.test(mcp1~Self_T1D,data=.sub,
na.rm=T)) #ttest platewise
do.call(c,lapply(B, function(x) x$p.value))
Error in do.call(c, lapply(B, function(x) x$p.value)) :
'wha...
2009 Apr 15
2
How to extract p-value into a table from a groups of t test
Hi,
I have run a groups of t test and obtained a list of the t-test results
(about 30). How do I extract p-values from the 30 t-test results and make a
table output? Thanks
Jun
Example t-test output:
============================
$Lambda_z
Welch Two Sample t-test
data: x[PA1.BS.DN$Onecode == 2] and x[PA1.BS.DN$Onecode == 3]
t = -0.1128, df = 33.635, p-value = 0.9109
alternative