Scientific Method 2
Terms
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- Scientific Method Steps
- Ask a question, Hypothesis, Experiment, Collect data, Analyze data/Draw conclusions, Form a theory from hypothesis, Communicating
- Data
- Any & all info scientists gather when trying to answer questions
- Sampling
- Technique of using a small part to represent an entrie population (Large & random)
- Hypothesis
- Tentative answer to a questions that can be tested but never proved true beyond all doubt
- Prediction
- Statement made in advance that states results that will be obtained from testing hypothesis, if supported
- Experiment
- Process of testing hypothesis/prediction by gathering data under controlled conditions
- Controlled Experiment
- Test of variables using a comparison of a control group w/an experimental group
- Control Group
- Serves as a comparison w/another identical group/individual except for 1 factor
- Experimental Group
- Serves as a comparison w/control group with one changed factor
- Independent Variable (IV)
- Factor changed throughout experiment
- Dependent Variable (DV)
- Responding factor that you measure, resulting from the change in the IV
- Ways of Analyzing Data
- Statistics, comparisons w/other studies, sources of error
- Modeling
- Constructing representation of object, system, or process that helps show relationships among data
- Model
- Explanation supported by data (Visual, verbal, or mathematical)
- Theory
- Broad & comprehensive statement of what is thought to be true (supported w/ experimental evidence)
- Examples of Theories
- Big Band Theory, Theory of Evolution by Natural Selection, Cell Theory