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# Re: st: Sums and means for each decile

 From Nick Cox To statalist@hsphsun2.harvard.edu Subject Re: st: Sums and means for each decile Date Thu, 11 Oct 2012 16:39:15 +0100

```Here's one way to do it.  I find this more direct -- and more flexible
-- than what the manual seems to imply you should do, but I could
easily be missing something.

webuse nlswork, clear
_pctile age, p(10(10)90)
ret li
gen decile = 10
qui forval i = 9(-1)1 {
replace decile = `i' if age < r(r`i')
}
tabstat age, by(decile) s(n sum mean)

On Thu, Oct 11, 2012 at 4:24 PM, Charles Vellutini
<charles.vellutini@ecopa.com> wrote:
> Thanks Nick and sorry for the lack of clarity.
>
> -decile- does not exist, I meant -centile-, my mistake.
>
> What I want are sums and means of the same variable that was used to determine the percentiles -- but now that you mention it, it would nice to have that on other variables too!
>
> Thanks,
> Charles
>
> -----Message d'origine-----
> De : owner-statalist@hsphsun2.harvard.edu [mailto:owner-statalist@hsphsun2.harvard.edu] De la part de Nick Cox
> Envoyé : jeudi 11 octobre 2012 17:15
> À : statalist@hsphsun2.harvard.edu
> Objet : Re: st: Sums and means for each decile
>
> What's -decile-?
>
> You're right about -pctile-. But what do you want?
>
> sums, means of some variable y in classes determined by selected percentiles of another variable x?
>
> sums, means of a variable x in classes determined by selected percentiles of the same variable x?
>
> On Thu, Oct 11, 2012 at 4:09 PM, Charles Vellutini <charles.vellutini@ecopa.com> wrote:
>
>> I have looked at -decile- and -pctile- but neither provides the sums and means of each decile/percentile (only the cutoffs), if I am not mistaken.
>>
>> One could of course recover the cutoffs from -decile- and program this by hand. There is also the excellent -glcurve- available from SSC but this produces graphs; it creates variables that, yes, could also be used to compute the sums I suppose.
>>
>> But I thought that someone surely programmed this already?
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```