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Biology Lecture Ch #1
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Inductive Logic
Taking observations or facts and creating a new proposition that is compatible with those facts and observations.
The 5 steps of the scientific method
-Observations
-Questions
-Hypothesis
tentative answers to questions
-Predictions
based in hypothesis
-Testing
the predictions by making additional observations or conducting experiments
Deductive Reasoning
Making predictions based on the hypothesis
EX-Tyrone Hayes predicted that frog tadpoles exposed to atrazine would show adverse effects of the chemical once they reached adulthood
Controled Experiments
manipulate one or more factors being tested
Comparative Experiment
compare unmanipulated data gathered from different sources
Controlled Expirement
an expirement that starts with groups that are simalar
hypothesis is based on a variable
Variable
hypothesis is based on this
a critical factor in an expirement
Comaprative Expirement
an expirement that starts with a prediction that there is a difference between groups based on the hypothesis
-variables are not controlled
Independent variable
can be manipulated
Dependent variable
Changes in response to the independant variable
Null Hypothesis
the premise that no difference exists
Data
quantified observations
Hypotheses proposed must
-be testable
-have the potential of being rejected
Reproduceable and quantifiable observations
causes evidence taht the power of biology depends on
Author
Anonymous
ID
38870
Card Set
Biology Lecture Ch #1
Description
Exam on ch 1.3 - ch 6
Updated
2010-10-01T02:47:55Z
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