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    Which statistical test to compare population percentage change over time?

    Hi, I'm relatively inexperienced with statistical tests and I'm trying to figure out which test to use for the following: I am comparing three sets of data (local, regional and national populations of a specific species) to see whether there is a significant difference in trends between the...
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    Which test should I use for multiple variables, multiple sites & non-parametric data?

    Hi All, I've spent the past two weeks trying to figure out which test to use and have gotten nowhere so hoping someone here can help! I have been given data for 4 sites, where the percentages were recorded for a number of variables, including leaf litter cover, rhododendron cover, light...