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zachary_scott0
zachary_scott0
Level I

Can you generate a letters report after conducting the Steel-Dwass nonparameteric comparison?

Mar 31, 2016 12:21 PM (8090 views)

If you run a similar test like Tukey's JMP generates a "connecting letters report." However our data is non-normal and the variances are heterogeneous so we needed to use the Kruskal-Wallis test to examine variance and then used Steel-Dwass to compare means for all pairs of treatments. How can we get a similar letters report after doing this analysis?

Thanks,

Zach

10 REPLIES 10
yelnats
yelnats
Level I

Re: Can you generate a letters report after conducting the Steel-Dwass nonparameteric comparison?

Aug 15, 2022 04:33 PM (573 views)  |  Posted in reply to message from yelnats 08-10-2022

I was able to use the readxl library to read the xls input directly

library("readxl")

 

The input excel file should be set up like this, with two columns. Where A,B are the columns and 1,2,3 are the rows

             A                             B

    pairwisecomparison    p.value
1     June-Aug                  0.1637
2     Nov-Aug                   0.1093
3     Nov-July                   0.9316

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