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Topic: exp. design
Replies: 1   Last Post: Sep 5, 1996 12:34 PM

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Bob Hayden

Posts: 2,384
Registered: 12/6/04
exp. design
Posted: Sep 4, 1996 9:19 PM
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----- Forwarded message from Joe H Ward -----


The preliminary Acorn Course Description contained:

(page 7)
II.C Planning and conducting experiments.
1. Randomized comparative experiments
a. Reducing the effect of uncontrolled factors
b. Measuring experimental error
2. Blocking to reduce variation

The latest course description contains:

(page 6)
II.C. Planning and conducting experiments.
1. Experiments versus observational studies versus surveys
2. Confounding, control groups, placebo effects, blinding
3. Treatments, experimental units, and randomization
4. Completely randomized design for two treatments
5. Randomized paired comparison design
6. Replication, blocking, and generalizability of results

----- End of forwarded message from Joe H Ward -----

This is just my two cents, but I see the new list as a clarification
rather than an expansion of the old one. I also think it is important
to note that there is no sign of any TECHNIQUES from a Design of
Experiments course moving into AP Stats. There are some CONCEPTS, but
these are concepts underlying techniques already included. In other
words, another way to look at the changes is as an attempt to be more
explicit about wanting to teach the underlying concepts, even when
cookbooks do not mention them (so the Acorn book had to).


_
| | Robert W. Hayden
| | Department of Mathematics
/ | Plymouth State College
| | Plymouth, New Hampshire 03264 USA
| * | Rural Route 1, Box 10
/ | Ashland, NH 03217-9702
| ) (603) 968-9914 (home)
L_____/ hayden@oz.plymouth.edu
fax (603) 535-2943 (work)




Date Subject Author
9/4/96
Read exp. design
Bob Hayden
9/5/96
Read Re: exp. design
Joe H Ward

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