Dear Experts,
I would be thankful if you guide me.
I have measured temperature in 3 days (on different locations). I want to test if there is a similar trend of temperature variations among the locations on different days.
I use SPSS. Would you please guide me on which method shall be used? Details are appreciated. The file is attached.
Sincerely,
Hi
To examine the trend of temperature change in different places, it seems better to use repeated measures analysis, I think you have measured a group of places in three consecutive times and if Assumptions are valid. The best analysis that seems appropriate and can be done with SPSS software is the analysis of the repeated measures.
I'd start by looking at the cross correlations between each pair of series. Then follow up if needed with a text on multiple time series methods. You might look at the attached screenshot search for some ideas. Best wishes David Booth
Further comments. I doubt that 3 data points are enough to determine a trend. Thus I suspect a spaghetti plot of the data from all the locations would be about the best you could do. D. Booth see attached screenshot for details and examples
One last comment. If you want to follow up on the repeated measures idea you are in the realm of longitudinal models. Look at the course notes by Prof M. Davidian of NSSU STAT DEPT. She invented quite a lot of this.
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