[R] pairwise.var.test

[Bert Gunter]

Hard to know what you want. You may wish to take a look here for ideas:

https://r-graph-gallery.com/

Cheers,
Bert

On Sun, Oct 30, 2022 at 12:34 PM Thomas Subia via R-help <
r-help using r-project.org> wrote:

> Colleagues,
>
> The RVAideMemoire package has a pairwise variance test which one can use
> to identify variance differences between group levels.
>
> Using the example from this package,
> pairwise.var.test(InsectSprays$count,InsectSprays$spray), we get this
> output:
>
>     Pairwise comparisons using F tests to compare two variances
>
> data:  InsectSprays$count and InsectSprays$spray
>
>    A              B             C             D            E
> B 0.7464     -               -              -              -
> C 0.0187     0.0358     -      -       -
> D 0.0865     0.1502     0.5131     -             -
> E 0.0122     0.0173     0.7185     0.3240    -
> F 0.4693     0.3240     0.0050     0.0173     0.0029
>
> P value adjustment method: fdr
>
> Is there a way to graph the pairwise variance differences so that users
> can easily identify the statistically significant variance differences
> between group levels?
>
> I can do this using Minitab but I'd prefer using R for this.
>
> Thomas Subia
>
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