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The Process of Science
Bio Lab Ch. 1
11
Biology
Undergraduate 1
03/07/2010

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Term
Science
Definition
The orderly process of posing and answering questions about the natural world through repeated and unbiased experiments and observations
Term
Scientific Method
Definition
1.Observation
2. Question
3.Hypothesis
-null(no difference)
-alternative(if, then)
4.Experiment
-measurable data
-repeatable
5.Conclusion
6.Communication
Term
Null Hypothesis
Definition
The most common way to state a clear and testable hypothesis. Useful because it is testable to see that there is "no difference" between groups studied.
Term
Treatment Variable
Definition
Variable being tested
Term
Response Variable
Definition
what you are measuring
Term
Replications
Definition
Repeated measures of each treatment under the same conditions
Term
Controls
Definition
Standards for comparison.
They are replicates with all the conditions of an experimental treatment except the treatment variable.
Term
Mean
Definition
Single number that represents the central tendency of the response variable.

Average
Term
Range
Definition
highest and lowest values in a set of replicates
Term
Standard Deviation
Definition
Measure of variation about the mean
Term
significantly different
Definition
differences between means must be due to the treatment and not just due to natural variation.
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