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Observation
Accurate report of a natural event or circumstance
Question
Why does this happen
Hypothesis
Educated guess as to a possible explanation of the observation
Prediction
Based on hypothesis
Test
Prediction is checked by experiment
Result
Shows hypothesis is false or not
Data
Information gathered
Replication of tests
Repeat experiment to check that results are consistent and accurate
Further testing
Based on new predictions
Publication
In a scientific journal such as nature
Peer review
Checked and verified by other scientists in the same field
Theory
A hypothesis that stands up against all the tests
Principle of Law
A theory that is successful against long term testing
Limitations of the value of the scientific method
Human error, natural world changing, accidental discoveries, planning and design, personal bias, insufficient knowledge, method of investigation, inability to interpret results, faulty conclusions, accuracy and honesty
Preventing Bias
Double blind test, neither patient or doctor know who is getting medicine or who is getting placebo
Note 
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