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RE: st: * mark indicating between group significans in box plots

From   Nick Cox <>
To   "''" <>
Subject   RE: st: * mark indicating between group significans in box plots
Date   Thu, 10 Nov 2011 12:19:11 +0000

I don't think anyone would have thought you rude here. Me, possibly.... 

Here is an oblique answer. 

sysuse auto
graph box turn trunk, text(55 50 "an interesting graph") ysc(r(. 60))


Lars Folkestad

It seems that some of my text has disappeared here.

Im using a: Wilcoxon signed ranks test - as my data is paired and not
normally distributed.

I did not mean to be rude.

I respect your decision not to answer, but seeing that this the starring
is a much used and 
Often asked for by reviewers in my field I hope someone who knows the
answer to how to star mark
A boxplot will answer.

Den 10/11/11 12.50 skrev "Nick Cox" <>:

>I will show my hand, as it were.
>I've often seen people test a difference between means and show a box
>plot as the graphical equivalent. I'd argue that a plot of means with
>confidence intervals would be directly related, although even then
>there are pitfalls.
>Of  course, that may not be what you are doing. If your test were say
>a Mann-Whitney-Wilcoxon test, a box plot makes more sense.
>Even so, a -dotplot- or -stripplot- (SSC) shows much detail than a box
>plot for two groups. A -qqplot- is even better.
>I personally dislike starring as a primitive practice and draw the
>line at explaining how to do it but there are plenty of people to
>think otherwise.

Den 10/11/11 10.31 skrev "Lars Folkestad" <>:

>>>Sorry, thought it was a graphics question and did thus not mention the

Den 10/11/11 10.05 skrev "Nick Cox" <>:

>>>>Various thoughts, but I'll mention only one: What's the underlying

On Thu, Nov 10, 2011 at 8:49 AM, Lars Folkestad

>>>>> Im trying to indicate between group significant in a box plot using
>>>>>        . graph box y1 y2
>>>>> Now i want to indicate that the between y1 and y2 there is a between
>>>>> significants using the standard * for p<0.05 and ** for p<0.001
>>>>> I can do it in the editor, but if there is a code i could put in my
>>>>> file, that would be the easiest.
>>>>> Iv been fiddling with the yvar option in something like this:
>>>>> . graph box y1 y2, box(1, lcolor(navy) yvar(re("*")) box(2,
>>>>> lcolor(green))

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