Re: Lecture/lab mix research results

[brian whatcott <inet@intellisys.net>]

At 08:57 8/7/97 -0400, Bob Beichner wrote:
....
> John Gastineau, John Risley, and I have been doing similar things in
> experimental sections of our Engineering Physics courses for the past four
> years and have all kinds of data pointing out the benefits.... In
head-to-head
> comparisons with control groups, the experimental students averaged 83% on
> problem solving vs 68% for the 600+ other engineers. The FCI results gave a
> Hake g factor of 0.53 vs a national average somewhere between 0.22 and 0.24
> for traditional courses. The TUG-K results were over 90% compared to
> national means around 40%. ...
> Bob
This sounds like a wonderful endorsement of a teaching method.
I ask myself the basic question:
Are these results signicant at some level of confidence?

 I fear I do not have quite enough data ( or perhaps I am being lazy...)

So, (with no insight into Hake g or TUG-K) are these results significant?

Regards
brian whatcott <inet@intellisys.net>
Altus OK