Prev: Data Validation/Cleansing Tool Query
Next: &sysdate question
From: oloolo on 6 Jan 2010 18:01
what is the skewness estimates in your extensive experience?

On Wed, 6 Jan 2010 13:24:33 -0500, Jonathan Goldberg
<jgoldberg(a)BIOMEDSYS.COM> wrote:

>In my (fairly extensive) experience the variance in the quality of code
>produced by statisticians is quite high. :-)
>
>Jonathan
>
>On Mon, 4 Jan 2010 17:27:47 -0500, oloolo <dynamicpanel(a)YAHOO.COM> wrote:
>
>>OT: why so many ppl claim that statisticians are bad SAS programmers? What
>>are their sample sizes? After all, SAS was written by Statisticians, LOL
>>
>>On Mon, 4 Jan 2010 17:07:59 -0500, Jonathan Goldberg
>><jgoldberg(a)BIOMEDSYS.COM> wrote:
>>
>>>I gave an (and who knows, maybe the) explanation in a post on the old
>>>thread before I noticed this new one. For ease of reference, here it is
>>>again.
>>>---------------------------------------
>>>This is a hoary question. Logically speaking, having x < 2500 resolve to
>>>true when x is missing is absurd, and having x = y resolve to true when
>>>both x and y are missing is ludicrous. Missing means "I don't know." If
>>>x and y are heights, you are claiming that you know that two heights are
>>>equal when you don't know what either of them is.
>>>
>>>It's done that way to spare unsophisticated programmers (such as
>>>statisticians :-)) from having to deal with three-valued logic. That is,
>>>logical operators can return three values: true, false, and null. In
>>>three valued logic the only operation that can return true or false when
>>>dealing with a null value is "is null."
>>>
First  |  Prev  | 
Pages: 1 2
Prev: Data Validation/Cleansing Tool Query
Next: &sysdate question