[Babase] Please review a darting view
Susan Alberts
alberts at duke.edu
Sat Jul 3 10:23:08 EDT 2010
OK so I would say that we don't add SE column, and we call Standard
Deviation stddev, to retain the sql function name. OK?
S
On Jul 2, 2010, at 10:34 PM, Karl O. Pinc wrote:
> On 07/02/2010 03:03:23 PM, Susan Alberts wrote:
>> I can see it too, thanks.
>>
>> It looks fine to me.
>>
>> I am okay with either stdev or stddev, but I imagine most people
>> will
>>
>> find the first (stdev) easier to manage.
>
> I did stddev because that's the name of the PostgreSQL
> function. We can do stdev if that sits better. Let
> me know your preference.
>
>>
>> With respect to standard error versus standard deviation, but most
>> likely we would calculate standard error for a larger data set, and
>> not on an individual by individual basis. The standard error will be
>> a
>>
>> function of the sample size, and I'm not sure that we will learn much
>>
>> by having that column in this table.
>
> Now that your mention it I recall having this discussion while
> doing the design and recall you saying the same thing then.
>
>
>
> Karl <kop at meme.com>
> Free Software: "You don't pay back, you pay forward."
> -- Robert A. Heinlein
>
>
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Susan Alberts, Dept of Biology, Duke University, Box 90338, Durham NC
27708, 919-660-7272 (Ph), 919-660-7293 (Fax)
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