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Informational observation that has not been systematically tested

Anecdotal Evidence

Process in which independent scientific experts read scientific studies before their publication to ensure that the authors have appropriately designed and interpreted their studies

Peer review

A testable and falsifiable explanation for a scientific observation or question

Scientific hypothesis

When is a scientific hypothesis testable?

If it can be supported or rejected by carefully designed experiments or non experimental studies

When is a scientific hypothesis falsifiable?

If it can be ruled out by data to show that the hypothesis does not explain the observation

Why is special creation not a scientific hypothesis?

There is no way of testing it.


If data supports a hypothesis it will be accepted until further testing and data prove otherwise. It never proves anything.

A carefully designed test, the results of which will either support or rule out a hypothesis


What type of experiments use experiment groups and control groups to test a hypothesis?

Controlled experiments

Variable or factor being deliberately changed in an experiment

Independent variable

Measured result of an experiment.

Dependent variable

Number of experimental subjects or the number of times an experiment is repeated.

Sample size

Measure of confidence that the results obtained are "real"

Statistical significance

When is statistical significance more likely?

When the sample size is larger

A hypothesis that continues to hold up after many years of rigorous testing

Scientific theory

Study of patterns or disease in populations, including risk factors


Consistent relationship between variables


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