Hi everyone. I have a question related to time series analysis. As you can see in the figure, I'd like to compare the mean in three specific periods of time (red, blue, and green color). What're the recommended statistical steps should I use or which tests should I do to compare these figures? since the data are associated with time, I'm not sure whether univariate repeated measures analysis of variance (ANOVA) can be applied? Thank you
Hi,
I don't understand what you mean with "volume". In case you refer to the mean, I would suspect that looking for structural breaks in the series would be an approach as these (among other) represent one or several shifts in the mean. I am however, surely no expert.
HTH
--Holger
My analysis would suggest blue and red are about the same but red has a outlier. Green is less than the other two. No pvalue of course but you get what you pay for. Now Holger is correct, use those three groups and if you can find a SUITABLE test for this situation you can get pvalues too. Best wishes, David Booth PS THINK ABOUT starting with a peak picker program like analytical chemistry uses with chromatography and spectroscopic scans. I would search an ACS journal called ANALYTICAL CHEMISTRY and keep the names Savitsky and Golay close to your heart ❤️
Hint Hint: there may be R packages too... Good luck, David Booth
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