[R] Time Series

[Uwe Ligges]

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
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> Skype: nicolegross-camp
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>
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> personal website:
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