<>
Just use -tden()- instead of -normalden()-, bearing in mind that you need an
additional argument, the df:
*******
clear*
inp byte y
1
2
4
5
2
3
1
1
0
1
end
gen byte x=_n+5
compress
list, noo
loc opt range(6 16) xli(11) yaxis(2) lwidth(thick) legend(off)
tw (bar y x) /* t dist with 5df
*/ (function y=tden(5, x-11), `opt') /*
normal distr as before
*/ (function y=normalden(x-11), `opt') /*
t distr with 2 df
*/ (function y=tden(2, x-11), `opt')
*******
HTH
Martin
-----Original Message-----
From: [email protected]
[mailto:[email protected]] On Behalf Of Nikolaos Pandis
Sent: Samstag, 16. Januar 2010 16:05
To: [email protected]
Subject: RE: st: RE: bar graph with overlay normal plot
Many thanks Martin, this was great.
Apologies about the attachemnet, I will keep it in mind for the futute.
Question: How could a fit instead of a normal curve, a t-distribution curve
with wider ends?
Thank you,
Nick
--- On Sat, 1/16/10, Martin Weiss <[email protected]> wrote:
> From: Martin Weiss <[email protected]>
> Subject: RE: st: RE: bar graph with overlay normal plot
> To: [email protected]
> Date: Saturday, January 16, 2010, 2:55 PM
>
> <>
>
> Did we not agree on a strict "no attachments" policy a long
> time ago on the
> list? Mind the FAQ!
>
> Still, I could see things like
>
> *******
> clear*
>
> inp byte y
> 1
> 2
> 4
> 5
> 2
> 3
> 1
> 1
> 0
> 1
> end
>
> gen byte x=_n+5
>
> compress
> list, noo
>
> tw (bar y x) (function y=normalden(x-11), /*
> */ range(6 16) xli(11) yaxis(2) /*
> */ lwidth(thick) legend(off))
> *******
>
>
> for you
>
>
> HTH
> Martin
>
>
> -----Original Message-----
> From: [email protected]
> [mailto:[email protected]]
> On Behalf Of Nikolaos Pandis
> Sent: Samstag, 16. Januar 2010 13:33
> To: [email protected]
> Subject: Re: st: RE: bar graph with overlay normal plot
>
> Dear Martin,
>
> Thank you for the posting.
> How may I overlay the normal plot on the attached graph
> with a mean of 11
> and the range 6-16 to include 95% of the datapoints?
> Many thanks,
>
> Nick
> --- On Sat, 1/16/10, Martin Weiss <[email protected]>
> wrote:
>
> > From: Martin Weiss <[email protected]>
> > Subject: st: RE: bar graph with overlay normal plot
> > To: [email protected]
> > Date: Saturday, January 16, 2010, 1:11 PM
> >
> > <>
> >
> > The normal part comes from
> >
> > *******
> > tw (function y=normalden(x), range(-4 4))
> > *******
> >
> >
> > HTH
> > Martin
> >
> > -----Original Message-----
> > From: [email protected]
> > [mailto:[email protected]]
> > On Behalf Of Nikolaos Pandis
> > Sent: Samstag, 16. Januar 2010 12:06
> > To: [email protected]
> > Subject: st: bar graph with overlay normal plot
> >
> > Hi to all.
> >
> > I would like to plot a twoway bar graph -twoway (bar
> var1
> > var2)- and then
> > overlay a normal plot on top.
> >
> > Any help would be appreciated.
> >
> > Many thanks,
> >
> > Nick
> >
> >
> >
> > *
> > * For searches and help try:
> > * http://www.stata.com/help.cgi?search
> > * http://www.stata.com/support/statalist/faq
> > * http://www.ats.ucla.edu/stat/stata/
> >
> > *
> > * For searches and help try:
> > * http://www.stata.com/help.cgi?search
> > * http://www.stata.com/support/statalist/faq
> > * http://www.ats.ucla.edu/stat/stata/
> >
>
>
>
>
>
> *
> * For searches and help try:
> * http://www.stata.com/help.cgi?search
> * http://www.stata.com/support/statalist/faq
> * http://www.ats.ucla.edu/stat/stata/
>
*
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