Message-ID: <5e7cc41f-b91b-4468-a933-c7f0f3cc138e@email.android.com>
Date: 2013-05-03T13:26:05Z
From: Jeff Newmiller
Subject: Very basic statistics in R
In-Reply-To: <CAF7OBP9+q9si3jxNEfsZsQbtEHK3ZDME2g2-7MwfY6UX433TGQ@mail.gmail.com>
I recommend you read the Introduction to R document that comes with R. Look for making vectors with the c() function, and using the mean() and sd() functions.
Note that this is not a homework help forum (read the Posting Guide mentioned at the bottom of every message). If this is not homework, you are going to need to do quite a bit of self study before you can ask questions clearly enough to get useful responses on this list. See
http://stackoverflow.com/questions/5963269/how-to-make-a-great-r-reproducible-example
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Sent from my phone. Please excuse my brevity.
Xavier Prudent <prudentxavier at gmail.com> wrote:
>Dear all,
>
>Very simple question, but apparently uneasy to solve in R:
>
>I have a sampling of a variable x: (3, 4. 5, 2, ...)
>
>I want to know:
> - the mean <x> -> mean(x)
> - the uncertainty on <x> -> std.error(x) ? Or sd(x)?
> - the standard deviation of x -> ?
> - the uncertainty on the standard deviation -> ?
>
>Anyone has an idea?
>
>Thanks in advance,
>
>regards,
>Xavier