Re: [R] Time Series

From: Uwe Ligges <ligges_at_statistik.tu-dortmund.de>
Date: Mon, 09 May 2011 17:28:42 +0200

Although this is not an R question.... actually, if I get such a question in our consulting centre, my advice is:

Present a table of your 4 observations and that's it from a quantitative point of view. There is no sense in modelling or testing with 4 observations.

Best,
Uwe Ligges

On 09.05.2011 16:20, Nicole Gross-Camp wrote:
> I have what I hope is a simple question - is it possible to do time series
> analysis on a small data set specifically only four data points?
>
>
>
> I have collected human threat data (mean number of threats per kilometre
> walked/ survey) every 3 months in eight different sites (four with an
> experimental element and four control sites). I am trying to determine the
> best way to determine if there is a trend in the data though from what I've
> seen of TSA, our data set is too small. I did a simple paired t-test on the
> first and average of following three surveys that shows no significant
> difference but it of course ignores the detail of the latter three surveys.
>
>
>
> I am not sure how to organize the data for importation into R. I've looked
> at Crawley and one of Zuur publications but the TS data they work with is
> much longer term and not over several (independent) sites.
>
>
>
> Any advice, help, or direction is much appreciated!
>
>
>
> Best,
>
> Nicole
>
>
>
> ________________________
>
> Nicole Gross-Camp, PhD
>
> Senior Research Associate
>
> University of East Anglia
>
> Norwich
>
> Rwanda: +250 (0)783647398
>
> Skype: nicolegross-camp
>
>
>
> Based in Rwanda from September 2010 through July 2011:
>
> BP 512
>
> Butare
>
> Rwanda
>
>
>
> personal website:
> http://www.uea.ac.uk/dev/People/Research+Associate/Nicole+Gross-Camp#info
>
>
>
> project website:
>
> www.ReDirectRwanda.com
>
>
>
>
> [[alternative HTML version deleted]]
>
> ______________________________________________
> R-help_at_r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.



R-help_at_r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code. Received on Mon 09 May 2011 - 15:31:43 GMT

This quarter's messages: by month, or sorted: [ by date ] [ by thread ] [ by subject ] [ by author ]

All messages

Archive maintained by Robert King, hosted by the discipline of statistics at the University of Newcastle, Australia.
Archive generated by hypermail 2.2.0, at Mon 09 May 2011 - 16:00:05 GMT.

Mailing list information is available at https://stat.ethz.ch/mailman/listinfo/r-help. Please read the posting guide before posting to the list.

list of date sections of archive