[ExI] gre

[William Flynn Wallace]

Always in the mood for a story.   bill w

On Thu, May 30, 2019 at 9:28 PM <spike at rainier66.com> wrote:

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> *From:* extropy-chat <extropy-chat-bounces at lists.extropy.org> *On Behalf
> Of *William Flynn Wallace
> *Sent:* Thursday, May 30, 2019 7:11 PM
> *To:* ExI chat list <extropy-chat at lists.extropy.org>
> *Subject:* Re: [ExI] gre
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> Well, after all, I did minor in statistics and psychometrics in grad
> school and taught it for many years.  Unlike you, I have no idea how many
> people overlook or don't know about this concept.  Why would they if they
> had not taken stat?
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> bill w
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> I worked at a big company for many years.  In a big company with lotsa
> engineers, people tend to get known for things, and can specialize.  My
> thing was mathematical modeling and statistics.  I had to make pitches to
> management to help them with some (what I woulda thought was) basic
> understandings, such as correlation is not causation, and restricted-range
> effects, closely related pre-selection effects, stuff like that.
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> Pre-selection is really big in graduate school applicants, because really
> almost all of those applicants are smart.  They are already top students to
> even presume they have a chance of admissions.
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> You really caught my attention with the post because I was a GRE
> champion.  I have a fun story about that if you want it.
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> spike
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> On Thu, May 30, 2019 at 6:49 PM <spike at rainier66.com> wrote:
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> *From:* extropy-chat <extropy-chat-bounces at lists.extropy.org> *On Behalf
> Of *William Flynn Wallace
> >
> *Subject:* [ExI] gre
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> >… correlations between GRE performance and graduate school performance
> are small (recent Science article), it does not mean that what is measure
> by the GRE is irrelevant….But people wanting to go to grad school are
> mostly pretty smart - restricted range.
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> bill w
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> Billw, you made my day.  There are far too few, tragically few, who
> understand restricted range effect.  People who do not understand how that
> works are surprised at how little correlation there is between pro football
> linebacker salary and weight.
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> spike
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