Hello dear researchers.
I have data collected from the same stations along seven years (once a year). The data is not normally distributed. Which statistical analysis should I use to test the difference between years and stations Friedman (related) or Kruskal-Wallis (independent)? And also depeding your answer which post-hoc test should I use incase of rejecting the null hypothesis?
Mehmet Sinan Iyisoy
Since data are related you should perform a statistical test that considers dependence.
I think you can perform a parametric test to your data.
Post-hoc tests depend on the method you select.
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Yahya Terzi
Mehmet Sinan Iyisoy and Jos Feys thanks for your repies. The R script was very helpful.
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