Re: Projectile Motion

[Rick Tarara <rtarara@SAINTMARYS.EDU>]

It takes a few years of experience to be able to write (and grade ;-) tests
to give the average you want.  I can usually get an average of about 80 on
tests and exams, but I've been at it over 20 years.  I wouldn't worry too
much about a 60 average at this point--unless you are REALLY sure the test
was much easier than that (really a hard thing to know).  What you can do
with those kind of grades is use a 'square-root curve'.  Take the square
root of their score times the square root of a perfect score.  For tests out
of 100 then a 64 becomes an 80, an 81 becomes 90, etc.  If raises and
compresses the scores but still maintains a differential between the high
performers and the low.

Rick

----- Original Message -----
From: "Tina Fanetti" <FanettT@WITCC.COM>
To: <PHYS-L@lists.nau.edu>
Sent: Tuesday, September 24, 2002 7:54 AM
Subject: Re: Projectile Motion


> Not having taken all sorts of fancy education courses or statistics....
>
> Does it mean anything if the grades are clustered together, say around 60?
>
> Tina
>
> Tina Fanetti
> Physics Instructor
> Western Iowa Technical Community College
> 4647 Stone Ave
> Sioux City IA 51102
> 712-274-8733 ext 1429