Saturday, February 6, 2016

Hypothesis Testing

Scientific Hypotheses and the Scientific Method

  • Science- Search for natural explanations of natural phenomena 
  • Methodology- Scientific Method 
Scientific Method 
  1. Obtain background information (literature search and review, Internet, lab observations) know what's known and what's unknown 
  2. Ask biological questions- what questions: descriptive research, how questions: search for casual mechanisms 
  3. Develop testable hypotheses
  4. Design experiment to test hypothesis 
  5. Collect Data
  6. Analyze data
  7. Interpret results 
  8. Answer biological questions- Did data and results support the hypothesis 
  9. Present the results- oral or written presentations for publication in a scientific journal 
Statistical Hypotheses and Statistical Testing 
  • Null Hypothesis- no differences from experimental hypotheses, no relationship 
  • Alternate Hypothesis- opposite the Null Hypothesis 
  • Two-tailed and one-tailed variations 

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