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rkruskal-wallis
Alex22
Alex22

Reputation: 1

how to run a Kruskal-Wallis Test in R, with 3 columns of data to include

using R to run a Kruskal-Wallis test to see if there is a difference between 4 species plot counts, over time.

Code I'm using is:-

kruskal.test(Plot_count$SPIECES ~ Time2, data = AMO_data_long)

But don't trust the results as appear to only test if there is a difference of plot counts over time and not test the frequency of plot counts between species over time. The data set has a column for species, time and plot count. how do you group plot count per species and test the difference in species frequency over time?

enter image description here

Using SPIECES, Time2 and Plot_count in code.

suggestions welcomed.

P.S. SPIECES is spelt incorrectly but it works :p

Upvotes: 0

Views: 91

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