Mihai Nica wrote:
Greetings:
I would like to make a table with descriptive statistics for a data.frame. I guess the
question is how can I put together, in a table, the results from, say:
apply(df, 2, mean, na.rm =T)
apply(df, 2, median, na.rm =T)
.......
Thanks,
Mihai Nica
Jackson State University
155 B Parkhurst Dr.
Jackson, MS 39202
601 969 5423
601 914 0361
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Apart from Uwe's advice of reading summary.data.frame,
here is a very simple version:
> test <- data.frame(x=rnorm(100), y=rnorm(100), z=rnorm(100))
> sapply(test, function(x) {
res <- c(mean(x), median(x), mad(x), sd(x))
names(res) <- c("mean","median","mad","sd")
res}
)
x y z
mean 0.2159557 0.01684044 -0.05950480
median 0.1123084 0.13149150 0.01451704
mad 1.0054574 0.91742137 1.16986352
sd 0.8999813 0.98771362 1.02901577
Kjetil
--
Kjetil Halvorsen.
Peace is the most effective weapon of mass construction.
-- Mahdi Elmandjra
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