Art Kendall wrote:
[snip good points]
in your quasi-experiment you can possibly contrast different levels of specific
pollutants, as well as kinds of pollutants, in different rivers at different
times.
I'm not a biologist, but I would be amazed if temperature did not affect
population
Let me take a (somewhat) contrarian position to those previously
expressed. An experiment is any test of a hypothesis. An experiment can
involve the use of observational (unmanipulated) data, as long as the
hypothesis is clearly stated prior to the collection of the data. While
it is true that an
SSCHEINE wrote:
Let me take a (somewhat) contrarian position to those previously
expressed. An experiment is any test of a hypothesis. An experiment can
involve the use of observational (unmanipulated) data, as long as the
hypothesis is clearly stated prior to the collection of the data.
At 03:59 PM 2/20/02 -0300, Voltolini wrote:
Hi,
I was reading a definition of experiment in science to be used in a
lecture and the use of treatments and controls are an important feature of
an experiment but my doubt is... is it possible to plan an experiment
without a control and call
Voltolini wrote:
Hi,
I was reading a definition of experiment in science to be used in a
lecture and the use of treatments and controls are an important feature of
an experiment but my doubt is... is it possible to plan an experiment
without a control and call this as an
Voltolini wrote:
Hi,
I was reading a definition of experiment in science to be used in a
lecture and the use of treatments and controls are an important feature of
an experiment but my doubt is... is it possible to plan an experiment
without a control and call this as an
