| From: | Fabien COELHO <coelho(at)cri(dot)ensmp(dot)fr> |
|---|---|
| To: | Gavin Flower <GavinFlower(at)archidevsys(dot)co(dot)nz> |
| Cc: | PostgreSQL Developers <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: gaussian distribution pgbench |
| Date: | 2014-07-03 08:58:11 |
| Message-ID: | alpine.DEB.2.10.1407031053460.19091@sto |
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| Thread: | |
| Lists: | pgsql-hackers |
Hello Gavin,
>> decile percents: 69.9% 21.0% 6.3% 1.9% 0.6% 0.2% 0.1% 0.0% 0.0% 0.0%
>> probability of fist/last percent of the range: 11.3% 0.0%
> I would suggest that probabilities should NEVER be expressed in percentages!
> As a percentage probability looks weird, and is never used for serious
> statistical work - in my experience at least.
>
> I think probabilities should be expressed in the range 0 ... 1 - i.e. 0.35
> rather than 35%.
I could agree about the mathematics, but ISTM that "11.5%" is more
readable and intuitive than "0.115".
I could change "probability" and replace it with "frequency" or maybe
"occurence", what would you think about that?
--
Fabien.
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