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  1. H

    Failure to calculate significance in the correct test! Two-way mixed ANOVA. Pls help!

    Hi all, I need some help with my SPSS testing. I am testing how salinity causes a difference in population growth for a species of jellyfish polyp. I have 3 groups of jellyfish polyps, which remain independent from each other. Each group of polyps is put under a different treatment of...
  2. D

    Help with Warning/Error messages. (!header) rlabp & invalid 'sep' value:

    Solved I am very new to R. I am having difficulties understanding how resolve a couple of error messages. Warning messages: 1: In if (!header) rlabp <- FALSE : the condition has length > 1 and only the first element will be used 2: In if (header) { : the condition has length > 1 and...
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    There are no valid cases for VAR when GRP = .. Statistics cannot be computed for this

    When I perform a normality test for my variables using the grouping variable named "Group", I got a warning message telling me that there are values in the grouping variable named "Group" equal ".." ! knowing that I revised all the values in it and they were all with specific values .Also the...
  4. S

    problems with Analysis Of Variance of unbalanced non parametric data

    Hello fellow R users :wave: I hope someone can help me solve this problem. I've been looking for a solution all day. I have a proportional response (% cover) variable. I have 2 explanatory factors, both with 3 or more levels: quadrats (of which there are many) and year (of which there are...