Nick C, Nick W & Newson Roger,
Thanks for the answers.
The table is the output of a event study (a very common procedure in
corporate finance and other fields..). The percentage represents average
daily abnormal returns for a sample of companies and time represents days
relative to event, with time 0 being the day of the event. The significance
levels could be from any of the statistical tests that are used in this
context. I didn't think anyone would be interested in this that why I didn't
mention it.
I was wondering really if I could put an if option on mysym, which I now
know is not possible. I intend to put four such tables into one graph, So
that I can explain the results with just one picture.
Thanks again for your help. I will reconsider the putting four in one
method!!
rajesh
-----Original Message-----
From: owner-statalist@hsphsun2.harvard.edu
[mailto:owner-statalist@hsphsun2.harvard.edu] On Behalf Of Nick Cox
Sent: 05 April 2006 21:14
To: statalist@hsphsun2.harvard.edu
Subject: st: RE: graphing question
Setting aside the issue of multiplicity raised
by the numerous simultaneous -- and mutually
dependent -- tests possibly implied here,
you can use -separate- to produce two distinct
response variables from one, and then employ
distinct symbols.
It would still be a propaganda graph, to use
Tukey's term. (In revenge against poor referencers,
I'll just give Tukey 1972 as the reference.)
It might be more subtle to use (say) a line to indicate
threshold levels and let the user think about
the graph without the propaganda. Is the
difference between 0.05% and 0.04% scientifically
interesting as well?
Nick
n.j.cox@durham.ac.uk
Rajesh Tharyan
> Say I have a table which looks like this the *** shows the
> values which are
> significant. Of course I can plot the percentages against
> time. Is there
> someway to highlight the significant values in the
> graph...Say for example
> by changing the size of the symbols only for the significant values.
>
> Time percentage
>
> -80 -0.02%
> -70 -0.01%
> -60 -0.04%
> -50 -0.05%
> -40 -0.05%
> -30 -0.07%***
> -20 -0.07%***
> -10 -0.16%***
> -5 -0.19%***
> -3 -0.17%***
> -2 -0.21%***
> -1 -0.27%***
> 0 0.09%***
> 1 0.22%***
> 2 0.09%***
> 3 0.08%***
> 5 0.05%***
> 10 0.04%
> 20 0.02%
> 30 -0.01%
> 40 -0.03%
> 50 0.02%
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