BIO 151 Lecture Notes - Lecture 3: Statistical Significance, Scientific Control, Confounding

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4 Feb 2017
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BIO 151-Scientific Method Notes
Scientific Method:
o Approach to learn about the natural world
o Observation- prompts question
o Hypothesis- possible explanation
o Prediction-based on hypothesis- if/then statements
o Test- using controlled experiment
Observation: (Step One)
o Collect information
o Medicine/medical journals
o Medical professionals
Hypothesis: (Step Two)
o Possible explanation
o Educated guess
*Requirements-must be testable, falsifiable
o Hypothesis cannot be proven true!
o Confounding variables- factors that e haen’t figured out
or checked for that could influence the outcome
Prediction: (Step Three)
o Based on hypothesis
o If/then statements
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